Biology 201 (Genetics) Exam #1 120 points 22 September 2006

Size: px
Start display at page:

Download "Biology 201 (Genetics) Exam #1 120 points 22 September 2006"

Transcription

1 Name KEY Section Biology 201 (Genetics) Exam #1 120 points 22 September 2006 Read the question carefully before answering. Think before you write. You will have up to 50 minutes to take this exam. After that, you MUST stop no matter where you are in the exam. Use clear gene symbols (i.e. Aa is easier to distinguish that Oo). If I can not read your handwriting, I will count the question wrong. Sign the honor pledge if applicable. Good luck! I pledge that I have neither given nor received unauthorized assistance during the completion of this work. Signature: 1

2 12 pts. 1. Genetic variation, provided through sexual reproduction, offers more opportunity for offspring to survive in changing environments. List two aspects of meiosis provide sources of such variation. Recombination/crossover between non-sister chromatids Independent assortment of different homologous chromosome sets into gametes (random assortment of homologous chromosomes / lining up of homologous chromosomes on metaphase plate and subsequest assortment into gametes did not get full credit unless you clearly indicated that set 1 assorts into gametes independently of set 2). 12 pts. 2. Consider three independently assorting gene pairs, which control three different characters. A is dominant to a, B is dominant to b, and D is dominant to d. For a cross between parents that are AaBbDD and AABbDd, write the answer to the questions below in the blank to the left of the question. 1/16 a. what is the probability of obtaining an offspring that is AaBBDd? 1/16 b. what is the probability of obtaining an offspring that is homozygous for all three dominant traits? 3/4 c. what is the probability of obtaining an offspring that will express all three dominant traits? 2

3 12 pts. 3. In rabbits, the alpha gene, which is on chromosome 9, controls leg formation: AA is normal, Aa results in short legs, and aa results in no legs. The beta gene, which is on chromosome 10, controls fur color: BB results in black fur, Bb results in brown fur, and bb results in white fur. a) If a cross is made between brown rabbits with short legs and white rabbits with short legs, what percentage of the offspring would be expected to have white fur and short legs? Parents BbAa x bbaa Progeny we are looking for bbaa Probability of bb in cross = ½ Probability of Aa in cross = ½ Probability of bb AND Aa = ½ * ½ = ¼ = 25% b) what type of genetic inheritance is described above for leg length? incomplete dominance 12 pts. 4. You are a spider geneticist. You cross a pure breeding white spider and a pure breeding green spider and you get F1 spiders that are green. Like a good geneticist, you continue your experiment and you mate the F1 spiders with each other and get the following F2 progeny: 8 green 4 yellow 3 blue 1 white What is the mode of inheritance for spider color? epistasis or 2 genes controlling 1 character 3

4 12 pts. 5. In the plant species Flowerus richmondus, known as the spider plant, individuals produce fruits that are red or blue. There are two alleles of one gene involved in fruit color. Researchers collected an array of individuals from the field and performed a series of crosses. The results are given in the table below. Parental Phenotype(s) Number of Offspring with Red Fruits Number of Offspring with Blue Fruits Parental Genotype(s) blue (self-fertilized) 0 80 aa **red (self-fertilized) Aa X Aa **red blue 46 0 AA x aa red red 44 0 A- X AA a) Which trait is dominant? red b) Put a star by the cross(es) that helped you determine which trait was dominant. c) Construct a legend (using A and a) for spider plant color. A = red a = blue d) Using your legend from part c, complete the last column of the table above by writing down the genotype of the parent or parents involved in each cross. 6. For ABO blood type inheritance, the A allele is codominant to the B allele; the O allele is recessive to both the A and B alleles. In a particular family, the father Joe s blood type in AB and the mother Ann s blood type is O. Ann has a child that is blood type O. a) Is Joe the father? NO** b) Explain your answer briefly. The child s genotype must be oo since the o allele is recessive to both the A and B alleles. The father only carries A and B alleles since he is AB. So none of the child s alleles for blood type could have come from Joe and so he can not be the father of the child. ** You could have answer possibly yes IF you presented a scenario where epistasis was in play such that a second gene controlled whether or not the A and B sugars even got attached to the cell surface. 4

5 18 pts. 7. You are a mouse geneticist and you believe that you have isolated the gene that controls ear size. You isolate mutant mice that have exceptionally large ears, and you have named the gene that encodes ear size the dumbo gene. You have also established a pure breeding strain of these dumbo mice that have exceptionally large ears. How would you use the scientific method to set up a genetic experiment to determine whether the ear size gene in mice is located on the X-chromosome? Make sure in your answer that you clearly indicate how you are using the scientific method. Several possible answers are shown here. You could also have taken one cross thought the F2 generation provided you gave predictions for both crosses. Step 1: make a hypothesis: Ear size gene is located on X-chromosome and large ears are dominant to normal-sized ears. Step 2: Design an experiment: The best way to test for X-linkage is to do reciprocal crosses. So, let D = large ears and d = normal ears. Cross pure breeding DY large-eared males with pure breeding dd normal-eared females (cross 1) and vice versa (cross 2). Examine the F1 progeny of these crosses for sex and ear size. Step 3: Make a prediction: If ear size gene is located on X-chromosome and large ears are dominant to regular ears, then I would expect for cross 1 that the males will have normal ears and the females will have large ears. If ear size gene is located on X-chromosome and large ears are dominant to smaller ears, then I would expect for cross 2 that the males and the females will have large ears. Step 4: Do experiment and collect data Step 5. Accept or reject hypothesis based on the data you obtain. OR Step 1: make a hypothesis: Ear size gene is located on X-chromosome and normal sized ears are dominant to large ears. Step 2: Design an experiment: The best way to test for X-linkage is to do reciprocal crosses. So, let d = large ears and D = normal ears. Cross pure breeding dy large-eared males with pure breeding DD normal-eared females (cross 1) and vice versa (cross 2). Examine the F1 progeny of these crosses for sex and ear size. Step 3: Make a prediction: If ear size gene is located on X-chromosome and regular ears are dominant to large ears, then I would expect for cross 1 that the males will have large ears and the females will have regular ears. If ear size gene is located on X-chromosome and regular ears are dominant to large ears, then I would expect for cross 2 that the males and the females will have regular ears. Step 4: Do experiment. Step 5. Accept or reject hypothesis. 5

6 B A C C Multiple choice section: (30 points total 6 points per question) Write your answer in the blank provided to the left. If you want to explain your answer, you can do so next to the question 1. The somatic cells of a particular male organism contain only one pair of homologous chromosomes (call these chromosomes A 1 A 2,) and one additional chromosome without a homolog (call it chromosome Q). What chromosomal combination would be likely in the four meiotic products of a single cell? a. A 2 Q, A 2 Q, A 2 Q, A 2 Q b. A 1, A 1, A 2 Q, A 2 Q c. A 2 Q, A 1 Q, A 1, A 2 d. A 1 Q, A 1 Q, AQ, A 2 Q e. A 1 Q, A 1 Q, A 1 Q, A 1 Q f. None of the above. 2. Which of the following best reflects a phylogenetic relationship between chimpanzees and baboons? a. They are grouped together because they have a common ancestor in recent history. b. They are grouped together because they both have an opposable thumb. c. They are grouped together because they both feed their young breast milk. d. They are grouped together because they live in similar habitats. e. All but A 3. In the scientific method, a hypothesis is a. another name for a theory. b. a theory that has been proven to be true. c. an idea that is being tested. d. an idea that has no basis in fact or observation. e. only useful if it is shown to be true. 4. You cross a pure breeding curly-haired, long-tailed mice with pure breeding straight-hair, short-tail mice. The F1 generation all have straight hair and long tails. You take a female F1 mouse (straight hair and long tail) and cross it with a pure breeding curly-hair, short-tailed mouse and get the following F2 ratios: 495 curly-haired, long-tailed 495 straight-hair, short-tailed 5 straight-hair, long-tailed 5 curly-haired, short-tailed Which of the following inheritance patterns is consistent with the data given here? a. Non-disjunction b. Independent assortment of unlinked genes c. Genetic linkage d. X-linkage e. Equal segregation E 5. The most fundamental feature that two members of a homologous chromosome pair share is that they have a. the same length. b. the same banding pattern. c. the same centromere position. d. alleles of the same genes at the same loci, where the chromosomes are genetically identical. e. alleles of the same genes at the same loci, where the chromosomes are genetically similar but not necessarily genetically identical. f. a, b, and c 6

Different versions of a single gene are called allleles, and one can be dominant over the other(s).

Different versions of a single gene are called allleles, and one can be dominant over the other(s). Answer KEY 1 Different versions of a single gene are called allleles, and one can be dominant over the other(s). 2 Describe genotype and phenotype in your own words. A genotype is the genetic makeup of

More information

MULTIPLE CHOICE QUESTIONS

MULTIPLE CHOICE QUESTIONS MULTIPLE CHOICE QUESTIONS 1. Mendel verified true-breeding pea plants for certain traits before undertaking his experiments. The term true-breeding refers to: A. genetically pure lines. B. organisms that

More information

Today: Mendel s Technique: What Mendel Observes: Mendelian Genetics: Consider this. Mendelian Genetics and Problems (In-Class 6)

Today: Mendel s Technique: What Mendel Observes: Mendelian Genetics: Consider this. Mendelian Genetics and Problems (In-Class 6) Today: Mendelian Genetics and Problems (In-Class 6) Mendelian Genetics: Consider this. 8 million possible chromosome combinations in each egg, and each sperm = >70 trillion possibilities! How are we able

More information

Question 3 (30 points)

Question 3 (30 points) Question 3 (30 points) You hope to use your hard-won 7.014 knowledge to make some extra cash over the summer, so you adopt two Chinchillas to start a Chinchilla breeding business. Your Chinchillas are

More information

13. Cell division is. assortment. telophase. cytokinesis.

13. Cell division is. assortment. telophase. cytokinesis. Sample Examination Questions for Exam 1 Material Biology 3300 / Dr. Jerald Hendrix Warning! These questions are posted solely to provide examples of past test questions. There is no guarantee that any

More information

Two-Factor Crosses. All of the resulting F 1 offsrping had round yellow peas (RrYy).

Two-Factor Crosses. All of the resulting F 1 offsrping had round yellow peas (RrYy). Two-Factor Crosses Mendel also wanted to see what happens when you study the inheritance of two traits at the same time. He first crossed true-breeding plants that had smooth yellow peas (RRYY) with plants

More information

UNIT 6 Genes and Inheritance sciencepeek.com

UNIT 6 Genes and Inheritance sciencepeek.com Part 1 - Inheritance of Genes Name Date Period 1. Fill in the charts below on the inheritance of genes. 2. In a diploid cell, there are copies of each chromosome present. 3. Each human diploid cell has

More information

Mendelian Genetics SI

Mendelian Genetics SI Name Mendelian Genetics SI Date 1. In sheep, eye color is controlled by a single gene with two alleles. When a homozygous brown-eyed sheep is crossed with a homozygous green-eyed sheep, blue-eyed offspring

More information

If you take the time to follow the directions below, you will be able to solve most genetics problems.

If you take the time to follow the directions below, you will be able to solve most genetics problems. Genetics Worksheet Part 1 Introduction: 1. Describe the genotypes given (use your notes). The first two are already done. A. DD homozygous, dominant D. ss B. Dd _heterozygous E. Yy C. dd F. WW 2. In humans,

More information

Seed color is either. that Studies Heredity. = Any Characteristic that can be passed from parents to offspring

Seed color is either. that Studies Heredity. = Any Characteristic that can be passed from parents to offspring Class Notes Genetic Definitions Trait = Any Characteristic that can be passed from parents to offspring Heredity The passing of traits from parent to offspring - Blood Type - Color of our Hair - Round

More information

Science 10-Biology Activity 17 Worksheet on More Complex Genetics

Science 10-Biology Activity 17 Worksheet on More Complex Genetics Science 10-Biology Activity 17 Worksheet on More Complex Genetics 10 Name Due Date Show Me Hand In Correct and Hand In Again By NOTE: This worksheet is based on material from pages 398-404 in Science Probe.

More information

What is Genetics? Genetics is the scientific study of heredity

What is Genetics? Genetics is the scientific study of heredity What is Genetics? Genetics is the scientific study of heredity What is a Trait? A trait is a specific characteristic that varies from one individual to another. Examples: Brown hair, blue eyes, tall, curly

More information

Name: Block: Date: Packet #12 Unit 6: Heredity

Name: Block: Date: Packet #12 Unit 6: Heredity Name: Block: Date: Packet #12 Unit 6: Heredity Objectives: By the conclusion of this unit, you should be able to: Topic 1: Simple Heredity 1. Define and relate the following terms: self-fertilization,

More information

Sections 2.1. and 2.2. (Single gene inheritance, The chromosomal basis of single-gene inheritance patterns)

Sections 2.1. and 2.2. (Single gene inheritance, The chromosomal basis of single-gene inheritance patterns) Chapter 2 Single-Gene Inheritance MULTIPLE-CHOICE QUESTIONS Sections 2.1. and 2.2. (Single gene inheritance, The chromosomal basis of single-gene inheritance patterns) 1. If a plant of genotype A/a is

More information

Mendelian Genetics Problems

Mendelian Genetics Problems BIO 181 Lab Spring 2014 Name: Mendelian Genetics Problems 1) Do your own work. These problems are similar to what will occur on the second lecture exam, final exam and lab quizzes. Do not share or work

More information

Genetics. What s Genetics? An organism s heredity is the set of characteristics it receives from its parents.

Genetics. What s Genetics? An organism s heredity is the set of characteristics it receives from its parents. Genetics Why don t you look exactly like your parents? Pull How are traits passed to the next generation? Pull What s Genetics? An organism s heredity is the set of characteristics it receives from its

More information

Chapter 11 Mendel and Punnett Squares

Chapter 11 Mendel and Punnett Squares Chapter 11 Mendel and Punnett Squares Key Vocabulary to review: Genotype Dominate Alleles Homozygous Phenotype Recessive Alleles Heterozygous What is Genetics? Who is Gregor Mendel? Why did he study pea

More information

Genetics Practice Problems. 1. For each genotype, indicate whether it is heterozygous (HE) or homozygous (HO) AA Bb Cc Dd.

Genetics Practice Problems. 1. For each genotype, indicate whether it is heterozygous (HE) or homozygous (HO) AA Bb Cc Dd. Name Period Genetics Practice Problems 1. For each genotype, indicate whether it is heterozygous (HE) or homozygous (HO) AA Bb Cc Dd Ee ff GG HH Ii Jj kk Ll Mm nn OO Pp 2. For each of the genotypes below,

More information

6. Show the cross for one heterozygous short hair cat and a long haired cat. What percentage of the offspring will have short hair?

6. Show the cross for one heterozygous short hair cat and a long haired cat. What percentage of the offspring will have short hair? Biology Ms. Ye Do Now: Genetics and Probability 1. What is a genotype? Name Date Block 2. What is a Phenotype? For each genotype, indicate whether it is heterozygous (Het) or homozygous (Hom) AA EE Ii

More information

Phenotype Observed Expected (O-E) 2 (O-E) 2 /E dotted yellow solid yellow dotted blue solid blue

Phenotype Observed Expected (O-E) 2 (O-E) 2 /E dotted yellow solid yellow dotted blue solid blue 1. (30 pts) A tropical fish breeder for the local pet store is interested in creating a new type of fancy tropical fish. She observes consistent patterns of inheritance for the following traits: P 1 :

More information

Genetics Intervention

Genetics Intervention Genetics Intervention Vocabulary: Define the following terms on a separate piece of paper. allele autosome chromosome codominance dihybrid diploid dominant gene gamete haploid heterozygous homozygous incomplete

More information

Genetics #2. Polyallelic Traits. Genetics can be very complicated.

Genetics #2. Polyallelic Traits. Genetics can be very complicated. Genetics #2 Genetics can be very complicated. Polyallelic Traits When a trait is caused by more than two alleles in a population. An individual still only inherits two alleles for the trait one from each

More information

7. Describe the following with words and give an example: Heterozygous, homozygous recessive, homozygous dominant

7. Describe the following with words and give an example: Heterozygous, homozygous recessive, homozygous dominant Name: Genetics UNIT EXAM Review Below are review questions for each of the 5 learning goals we have addressed during this unit. This is the majority of the science content we covered. However, as a disclaimer

More information

GENETICS PRACTICE 1: BASIC MENDELIAN GENETICS

GENETICS PRACTICE 1: BASIC MENDELIAN GENETICS Period Date GENETICS PRACTICE 1: BASIC MENDELIAN GENETICS Solve these genetics problems. Be sure to complete the Punnett square to show how you derived your solution. 1. In humans the allele for albinism

More information

Welcome to Jeopardy! Genetics. Please get your blood typing lab out for me to check. Come up to my desk with your partner

Welcome to Jeopardy! Genetics. Please get your blood typing lab out for me to check. Come up to my desk with your partner Welcome to Jeopardy! Genetics Please get your blood typing lab out for me to check. Come up to my desk with your partner If a boy is colorblind, he inherited it from A) His mother B) His father C) Both

More information

Genetics Problem Set

Genetics Problem Set AP Biology - Unit 6: Patterns of Inheritance Name: Genetics Problem Set Independent Assortment Problems 1. One gene has alleles A and a. Another has alleles B and b. For each genotype listed, what type(s)

More information

9-2 Probability and Punnett. Squares Probability and Punnett Squares. Slide 1 of 21. Copyright Pearson Prentice Hall

9-2 Probability and Punnett. Squares Probability and Punnett Squares. Slide 1 of 21. Copyright Pearson Prentice Hall 9-2 Probability and Punnett 11-2 Probability and Punnett Squares Squares 1 of 21 11-2 Probability and Punnett Squares Genetics and Probability How do geneticists use the principles of probability? 2 of

More information

Homework Packet. Interactive Notebook. Unit Assessments. Exam-Genetics 100. Lab-Baby Reebops 25. Project: Genetic Disorders Planner 35

Homework Packet. Interactive Notebook. Unit Assessments. Exam-Genetics 100. Lab-Baby Reebops 25. Project: Genetic Disorders Planner 35 NAME PERIOD Points Homework Packet Principles of Heredity 2 Chromosome Mapping 2 Probability and Activities (#1-11) 2 Simple Genetics Problem (#12-15) 2 Practice Crosses (#16-24) 2 Dihybrid: You Try Problems

More information

HEREDITY HOW YOU BECAME YOU!

HEREDITY HOW YOU BECAME YOU! HEREDITY HOW YOU BECAME YOU! ESSENTIAL QUESTIONS Why do individuals of the same species vary in how they look, function and behave? WHY DO INDIVIDUALS OF THE SAME SPECIES VARY IN HOW THEY LOOK, FUNCTION

More information

Biology 100. ALE #8. Mendelian Genetics and Inheritance Practice Problems

Biology 100. ALE #8. Mendelian Genetics and Inheritance Practice Problems Biology 100 Instructor: K. Marr Name Lab Section Group No. Quarter ALE #8. Mendelian Genetics and Inheritance Practice Problems Answer the following questions neatly and fully in the spaces provided. References:

More information

GENETICS 310 PRACTICE EXAM I-1 ANSWERED

GENETICS 310 PRACTICE EXAM I-1 ANSWERED GENETICS 310 PRACTICE EXAM I-1 ANSWERED I The results of four crosses are shown below. Put a legend for the inheritance of each character in each problem in the "Legends" box, and then use your legend

More information

3) DEFINITIONS: multiple alleles: polygenic traits: codominance: incomplete dominance: gene: allele: homozygous: heterozygous: autosomal: sex-linked:

3) DEFINITIONS: multiple alleles: polygenic traits: codominance: incomplete dominance: gene: allele: homozygous: heterozygous: autosomal: sex-linked: WLHS / Biology / Unit 6 Genetics / Monson Name Date Per 1) Compare the processes of MITOSIS and MEIOSIS: How many daughter cells are produced? If the parent cell has 22 chromosomes, how many chromosomes

More information

Problem 1. What is the simplest explanation for the inheritance of these colors in chickens?

Problem 1. What is the simplest explanation for the inheritance of these colors in chickens? Problem 1 A rooster with gray feathers is mated with a hen of the same phenotype. Among their offspring, 15 chicks are gray, 6 are black, and 8 are white. What is the simplest explanation for the inheritance

More information

Problem 1. What is the simplest explanation for the inheritance of these colors in chickens?

Problem 1. What is the simplest explanation for the inheritance of these colors in chickens? Problem 1 A rooster with gray feathers is mated with a hen of the same phenotype. Among their offspring, 15 chicks are gray, 6 are black, and 8 are white. What is the simplest explanation for the inheritance

More information

TOPIC 8: PUNNETT SQUARES

TOPIC 8: PUNNETT SQUARES Page 1 TOPIC 8: PUNNETT SQUARES PUNNETT SQUARES 8.1: Definition A Punnett square is a device to help you predict the possible genotypes of the offspring if you know the genotypes of the parents. Because

More information

Genetics Lab #4: Review of Mendelian Genetics

Genetics Lab #4: Review of Mendelian Genetics Genetics Lab #4: Review of Mendelian Genetics Objectives In today s lab you will explore some of the simpler principles of Mendelian genetics using a computer program called CATLAB. By the end of this

More information

Next Wednesday declaration of invasive species due I will have Rubric posted tonight Paper is due in turnitin beginning of class 5/14/1

Next Wednesday declaration of invasive species due I will have Rubric posted tonight Paper is due in turnitin beginning of class 5/14/1 Next Wednesday declaration of invasive species due I will have Rubric posted tonight Paper is due in turnitin beginning of class 5/14/1 4/13. Warm-up What is the difference between mrna and trna: mrna

More information

Genetics Worksheet. Name

Genetics Worksheet. Name Genetics Worksheet Name Section A: Vocabulary 1. Identify if the alleles are homozygous (Ho) or heterozygous (He). a. DD b. Ee c. tt d. Hh 2. For each genotype below, determine the phenotype. a. Purple

More information

Problem 1. What is the simplest explanation for the inheritance of these colors in chickens?

Problem 1. What is the simplest explanation for the inheritance of these colors in chickens? Problem 1 A rooster with gray feathers is mated with a hen of the same phenotype. Among their offspring, 15 chicks are gray, 6 are black, and 8 are white. What is the simplest explanation for the inheritance

More information

Station 1. Using the cards, match the vocabulary word with its definition. If there are any words you do not know, write them down if you have time!

Station 1. Using the cards, match the vocabulary word with its definition. If there are any words you do not know, write them down if you have time! Station 1 Using the cards, match the vocabulary word with its definition. If there are any words you do not know, write them down if you have time! Station 2 Answer the following questions on a separate

More information

Name period date assigned date due date returned. The Genetics of Garden Peas

Name period date assigned date due date returned. The Genetics of Garden Peas Name period date assigned date due date returned ollow instructions 1-4. ross 1. Place the parents genotypes in the Punnett Square and fill in the offspring s genotypes. Parent 2 Parent 1 Genotype Results

More information

3. Complete the Punnett square for heterozygous yellow (yellow is dominant): What is the genotype: and what is the phenotype:

3. Complete the Punnett square for heterozygous yellow (yellow is dominant): What is the genotype: and what is the phenotype: Name: Period: Video Review: Two Factor Crosses & Independent Assortment: 1. Mendel discovered many things about the characteristics of pea plants including the qualities of the peas themselves. What two

More information

Study of genes and traits and how they are passed on.

Study of genes and traits and how they are passed on. Mendel Single Trait Experiments _ Genetics _ Biology.mp4 Heredity Meet the Super Cow [www.keepvid Study of genes and traits and how they are passed on. Law of Segregation Alleles pairs separate during

More information

8.2- Human Inheritance

8.2- Human Inheritance 8.2- Human Inheritance Sex Linked Traits Traits controlled by genes on the sex chromosome. Recessive X-linked traits are always shown in males. Males only have one X chromosome Females must inherit two

More information

Genetics Review Name: Block:

Genetics Review Name: Block: Genetics Review Name: Block: Part 1: One Trait Crosses 1. Describe the genotypes below using vocabulary terms given in class. a. DD: b. Dd: c. dd: 2. In humans, brown eye color (B) is dominant over blue

More information

Name Period G eni G ames Worksheet Packet 1

Name Period G eni G ames Worksheet Packet 1 Name Period GeniGames Worksheet Packet 1 Determining Differences Different variations of traits exist. Some of them are more common than others. Working in groups tally the number of students that have

More information

Mendelian Genetics Problem Set

Mendelian Genetics Problem Set Mendelian Genetics Problem Set Name: Biology 105 Principles of Biology Fall 2003 These problem sets are due at the beginning of your lab class the week of 11/10/03 Before beginning the assigned problem

More information

Bio 111 Study Guide Chapter 14 Genetics

Bio 111 Study Guide Chapter 14 Genetics Bio 111 Study Guide Chapter 14 Genetics BEFORE CLASS: Reading: Read the whole chapter from p. 267-288. It might also be helpful to read before class the Tips for Genetics Problems section on p.290. Definitely

More information

17 Inherited change Exam-style questions. AQA Biology

17 Inherited change Exam-style questions. AQA Biology 1 Two genes in a mouse interact to control three possible coat colours: grey, black and brown. The two genes are located on separate chromosomes. Each gene has two alleles: A is dominant to a and B is

More information

Genetics Lab #4: Review of Mendelian Genetics

Genetics Lab #4: Review of Mendelian Genetics Genetics Lab #4: Review of Mendelian Genetics Objectives In today s lab you will explore some of the simpler principles of Mendelian genetics using a computer program called CATLAB. By the end of this

More information

Heredity. What s heredity? An organism s heredity is the set of characteristics it receives from its parents. Today, known as genetics.

Heredity. What s heredity? An organism s heredity is the set of characteristics it receives from its parents. Today, known as genetics. Heredity What s heredity? An organism s heredity is the set of characteristics it receives from its parents. Today, known as genetics. 1 Gregor Mendel Father of Genetics, whose work with pea plants led

More information

AYCI: Do NOT use your notes. This fish picture is an example of codominance. IN YOUR OWN WORDS, write an explanation of codominance based on what you

AYCI: Do NOT use your notes. This fish picture is an example of codominance. IN YOUR OWN WORDS, write an explanation of codominance based on what you AYCI: Do NOT use your notes. This fish picture is an example of codominance. IN YOUR OWN WORDS, write an explanation of codominance based on what you have learned so far. RR x WW are parents. Based on

More information

Genetics and Probability

Genetics and Probability Genetics and Probability Genetics and Probability The likelihood that a particular event will occur is called probability. The principles of probability can be used to predict the outcomes of genetic crosses.

More information

BioSci 110, Fall 08 Exam 2

BioSci 110, Fall 08 Exam 2 1. is the cell division process that results in the production of a. mitosis; 2 gametes b. meiosis; 2 gametes c. meiosis; 2 somatic (body) cells d. mitosis; 4 somatic (body) cells e. *meiosis; 4 gametes

More information

1 st Type basic vocabulary and setting up Punnett Squares:

1 st Type basic vocabulary and setting up Punnett Squares: Genetics Punnett Square Review Questions Work booklet Name: There are several types of questions that involve the use of Punnett Squares in this unit. Here s the break down or summary of those problems.

More information

Understanding how our genes are passed down And how to calculate the probabilities of our traits.

Understanding how our genes are passed down And how to calculate the probabilities of our traits. Calculating the probability of our genetics Understanding how our genes are passed down And how to calculate the probabilities of our traits. Leading questions: 1. What do Punnett Squares mean? 2. How

More information

Incomplete Dominance, Co-Dominance, and Sex-linked dominance NON-MENDELIAN GENETICS

Incomplete Dominance, Co-Dominance, and Sex-linked dominance NON-MENDELIAN GENETICS Incomplete Dominance, Co-Dominance, and Sex-linked dominance NON-MENDELIAN GENETICS INCOMPLETE DOMINANCE INCOMPLETE DOMINANCE Two alleles dominant and recessive Genotypes are the same as simple Mendelian

More information

6. Show the cross for one heterozygous short hair cat and a long haired cat. What percentage of the offspring will have short hair?

6. Show the cross for one heterozygous short hair cat and a long haired cat. What percentage of the offspring will have short hair? Biology Ms. Ye Do Now: Genetics and Probability 1. What is a genotype? Name Date Block 2. What is a Phenotype? For each genotype, indicate whether it is heterozygous (Het) or homozygous (Hom) AA EE Ii

More information

Step 4: All of the offspring will be rw. So the genotypic ratio is: 4 : 0 : 0 rw ww rr

Step 4: All of the offspring will be rw. So the genotypic ratio is: 4 : 0 : 0 rw ww rr Part 7: Incomplete Dominance or Codominance In Four o clock flowers the alleles for flower color are both equal therefore neither dominates over the other. We call this condition incomplete dominance or

More information

Heredity and Genetics Notes- Enriched

Heredity and Genetics Notes- Enriched Heredity and Genetics Notes- Enriched Def: Law of Segregation or independent assortment Def: Ex: BB Bb bb Dominance and recessive Traits Traits Stem length Seed shape Seed colour Seed coat colour Pod shape

More information

Genome 371; A 03 Berg/Brewer Practice Exam I; Wednesday, Oct 15, PRACTICE EXAM GENOME 371 Autumn 2003

Genome 371; A 03 Berg/Brewer Practice Exam I; Wednesday, Oct 15, PRACTICE EXAM GENOME 371 Autumn 2003 PRACTICE EXAM GENOME 371 Autumn 2003 These questions were part of the first exam from Autumn 2002. Take the exam in a quiet place and only when you are sure you will have time to complete the exam uninterrupted.

More information

1. For each genotype, indicate whether it is heterozygous (HE) or homozygous (HO) Ii Jj kk Ll

1. For each genotype, indicate whether it is heterozygous (HE) or homozygous (HO) Ii Jj kk Ll Simple Genetics Practice Problems 1. For each genotype, indicate whether it is heterozygous (HE) or homozygous (HO) AA Bb Cc Dd Ee ff GG HH Ii Jj kk Ll Mm nn OO Pp 2. For each of the genotypes below, determine

More information

Mendel s Laws: Their Application to Solving Genetics Problem

Mendel s Laws: Their Application to Solving Genetics Problem Solving Genetics Problems Page 1 Mendel s Laws: Their Application to Solving Genetics Problem Objectives This lab activity is designed to teach students how to solve classic genetics problems using Mendel

More information

Questions from last week. You have a mouse with red eyes and a mouse with blue eyes. How could you determine which is the dominant trait?

Questions from last week. You have a mouse with red eyes and a mouse with blue eyes. How could you determine which is the dominant trait? Questions from last week You have a mouse with red eyes and a mouse with blue eyes. How could you determine which is the dominant trait? Mouse Eyes Without knowing anything about the parents you ll need

More information

Mendelian Genetics Part 4: Dihybrid Cross

Mendelian Genetics Part 4: Dihybrid Cross Mendelian Genetics Part 4: Dihybrid Cross Name Terms and Explanations Explain the following terms and concepts, using both a diagram and an explanation in sentences or statements: Monohybrid cross Meiosis

More information

Please keep all extra notes and practice problems neatly organized in your notebook so that may reference them as needed This information is covered

Please keep all extra notes and practice problems neatly organized in your notebook so that may reference them as needed This information is covered Please keep all extra notes and practice problems neatly organized in your notebook so that may reference them as needed This information is covered in 6.3, 6.4, 6.5 and chapter 7 of your textbook Study

More information

Patterns of Inheritance. What are the different ways traits can be inherited?

Patterns of Inheritance. What are the different ways traits can be inherited? Patterns of Inheritance What are the different ways traits can be inherited? Review: Patterns of Inheritance we know already 1. Autosomal dominant: If an individual is heterozygous, only one allele is

More information

Chromosome Theory of Inheritance

Chromosome Theory of Inheritance Page 1 of 5 Chromosome Theory of Inheritance Proposed by: Walter Sutton and Thoeodor Boveri. (1902) What they did Studied chromosomes during the various phases of meiosis. What they found Chromosomes occur

More information

Genetics & Punnett Square Notes

Genetics & Punnett Square Notes Genetics & Punnett Square Notes Essential Question What is Genetics and how are punnett squares used? History of Genetics Gregor Mendel Father of modern genetics Studied pea plants Found that plants that

More information

Visit for Videos, Questions and Revision Notes.

Visit   for Videos, Questions and Revision Notes. Q. Coat colour in mice is controlled by two genes, each with two alleles. The genes are on different chromosomes. One gene controls the pigment colour. The presence of allele A results in a yellow and

More information

HEREDITARY STUDENT PACKET # 5

HEREDITARY STUDENT PACKET # 5 HEREDITARY STUDENT PACKET # 5 Name: Date: Big Idea 16: Heredity and Reproduction Benchmark: SC.7.L.16.1: Understand and explain that every organism requires a set of instructions that specifies its traits,

More information

Other Patterns of Inheritance:

Other Patterns of Inheritance: Biology Ms. Ye Name Date Block Other Patterns of Inheritance: Incomplete Dominance o One allele is not completely dominant over the other, resulting in a o Incomplete dominance is not support for the blending

More information

Name Date Hour Table # 1i1iPunnett Squares

Name Date Hour Table # 1i1iPunnett Squares 1i1iPunnett Squares A Punnett square is a chart which shows/predicts all possible gene combinations in a cross of parents (whose genes are known). Punnett squares are named for an English geneticist, Reginald

More information

Fruit Fly Exercise 2 - Level 2

Fruit Fly Exercise 2 - Level 2 Fruit Fly Exercise 2 - Level 2 Description of In this exercise you will use, a software tool that simulates mating experiments, to analyze the nature and mode of inheritance of specific genetic traits.

More information

Mendelian Genetics 1

Mendelian Genetics 1 Mendelian Genetics 1 Genetic Terminology Trait - any characteristic that can be passed from parent to offspring Heredity - passing of traits from parent to offspring Genetics - study of heredity 2 Gregor

More information

Genetics Problems. Character Dominant Recessive

Genetics Problems. Character Dominant Recessive Genetics Problems 1. A rooster with gray feathers is mated with a hen of the same phenotype. Among their offspring, 15 chicks are gray, 6 are black, and 8 are white. What is the simplest explanation for

More information

Determining the Inheritance Patterns of Purple Eye, Lobe Eye, and Yellow Body Traits of. Drosophilia Flies. Introduction

Determining the Inheritance Patterns of Purple Eye, Lobe Eye, and Yellow Body Traits of. Drosophilia Flies. Introduction Karen Jacques and Audrey Puleio Mrs. Lajoie Honors Biology April 30, 2012 Determining the Inheritance Patterns of Purple Eye, Lobe Eye, and Yellow Body Traits of Drosophilia Flies Introduction This experiment

More information

Page 1 of 7. Name: A. Preliminary Assessment #3. You may need a calculator for numbers 2&3.

Page 1 of 7. Name: A. Preliminary Assessment #3. You may need a calculator for numbers 2&3. Page 1 of 7 Name: 03-121-A Preliminary Assessment #3 You may need a calculator for numbers 2&3. You may bring one 3 inch by 5 inch card or paper with anything handwritten on it (front and back). You have

More information

Genetics Extra Practice Show all work!

Genetics Extra Practice Show all work! Name: # Date: Per: Genetics Extra Practice Show all work! Monohybrids 1. A cross between two pea plants hybird for a single trait produces 60 offspring. Approximately how many of the offspring would be

More information

Student Exploration: Mouse Genetics (One Trait)

Student Exploration: Mouse Genetics (One Trait) Name: Date: Student Exploration: Mouse Genetics (One Trait) Vocabulary: allele, DNA, dominant allele, gene, genotype, heredity, heterozygous, homozygous, hybrid, inheritance, phenotype, Punnett square,

More information

Sex-linked/incomplete dominance/codominance quiz

Sex-linked/incomplete dominance/codominance quiz 1. What is the difference between genotype and phenotype? a. Genotype is the physical characteristics; phenotype is the genetic make-up. b. Genotype is the genetic make-up; phenotype is the physical characteristics.

More information

Here are some ground rules that you should ALWAYS follow when tackling an Inheritance Problem:

Here are some ground rules that you should ALWAYS follow when tackling an Inheritance Problem: E p is od e T h r e e : N o n - M ed ellian Inheritance Here are some ground rules that you should ALWAYS follow when tackling an Inheritance Problem: 1. Define the Alleles in question - you must state

More information

Cross Application Problems

Cross Application Problems Cross Application Problems Name: Period: Objective: To practice solving genetics problems by setting up both monohybrid and dihybrid crosses. Part I Genotypes and Phenotypes: 1. How many traits are investigated

More information

Punnett square practice Honors KEY

Punnett square practice Honors KEY Punnett square practice Honors KEY 1) Yellow seeds are dominant over recessive green seeds. Cross a homozygous dominant yellow seeded-plant with a green-seeded plant. What are the odds of getting a plant

More information

Genetics Practice Problems

Genetics Practice Problems Genetics Practice Problems Work out these genetic problems. The answers are provided but the most important aspect is the practice of working out the problems. Use this information for the two questions

More information

Exceptions to Mendel's Rules of Genetics

Exceptions to Mendel's Rules of Genetics Exceptions to Mendel's Rules of Genetics Mrs. Herman 2017 Mendel Genetics with a dominate and recessive trait the dominate completely masks the appearance of any other trait and there is no mixing or blending.

More information

Furry Family Genetics

Furry Family Genetics Furry Family Genetics Name: Period: Directions: Log on to http://vital.cs.ohiou.edu/steamwebsite/downloads/furryfamily.swf and complete your Furry Family. In the tables provided, list the genotypes and

More information

Monohybrid Cross Video Review

Monohybrid Cross Video Review Name: Period: Monohybrid Cross Video Review 1. What is the name of the little boxes used in order to predict offspring without having to breed? 2. Define Punnett Square: 3. Define a monohybrid cross: 4.

More information

No tail (Manx) is a dominant trait and its allele is represented by M The presence of a tail is recessive and its allele is represented by m

No tail (Manx) is a dominant trait and its allele is represented by M The presence of a tail is recessive and its allele is represented by m Lab #4: Extensions to Mendelian Genetics Exercise #1 In this exercise you will be working with the Manx phenotype. This phenotype involves the presence or absence of a tail. The Manx phenotype is controlled

More information

Heredity. Heredity is the passing of traits from parent to

Heredity. Heredity is the passing of traits from parent to Genetics Heredity Heredity is the passing of traits from parent to offspring. How do the traits get passed? Chromosomes contain genes. Different forms of the same gene are called alleles lleles Example

More information

Genetics Assignment. Name:

Genetics Assignment. Name: Genetics Assignment Name: 1. An organism is heterozygous for two pairs of genes. The number of different combinations of alleles that can form for these two genes in the organism s gametes is A. 1 B.

More information

MITOCW MIT7_01SCF11_track02_300k.mp4

MITOCW MIT7_01SCF11_track02_300k.mp4 MITOCW MIT7_01SCF11_track02_300k.mp4 PROFESSOR: Mendel's second law-- this thing over here about a three to one ratio about a single trait being controlled by a pair of alleles, and those alleles being

More information

AP Biology Genetics Practice Alternative Modes of Inheritance

AP Biology Genetics Practice Alternative Modes of Inheritance AP Biology Genetics Practice Alternative Modes of Inheritance Name: Blk: Please put all answers on a separate sheet of paper and SHOW ALL WORK! 1. In snapdragons red flower color (R) is incompletely dominant

More information

Non-Mendelian Genetics

Non-Mendelian Genetics Non-Mendelian Genetics Jan 3 rd Non-Mendelian Genetics Incomplete Dominance Codominance Practice handout Jan 4 th Multiple Alleles Polygenic Traits Sex-Linked Traits Jan 5 th Quiz Chromosome structure,

More information

DO NOT WRITE ON THIS TEST Unit 6 Assessment Genetics Objective 3.2.2

DO NOT WRITE ON THIS TEST Unit 6 Assessment Genetics Objective 3.2.2 DO NOT WRITE ON THIS TEST Unit 6 Assessment Objective 3.2.2 Vocabulary Matching + 1 point each 1. dominant 2. recessive 3. genotype 4. phenotype 5. heterozygous 6. homozygous 7. incomplete dominance 8.

More information

Inheritance of Livershunt in Irish Wolfhounds By Maura Lyons PhD

Inheritance of Livershunt in Irish Wolfhounds By Maura Lyons PhD Inheritance of Livershunt in Irish Wolfhounds By Maura Lyons PhD Glossary Gene = A piece of DNA that provides the 'recipe' for an enzyme or a protein. Gene locus = The position of a gene on a chromosome.

More information

Unit Calendar: Subject to Change

Unit Calendar: Subject to Change NAME : Block : Notes Page 6-1 SOL Objectives LS 12, Genetics By the end of this unit, the students should understand that organisms reproduce and transmit genetic information to new generations: a) the

More information

Part One: Introduction to Pedigree teaches students how to use Pedigree tools to create and analyze pedigrees.

Part One: Introduction to Pedigree teaches students how to use Pedigree tools to create and analyze pedigrees. Genetics Monohybrid Teacher s Guide 1.0 Summary The Monohybrid activity is the fifth core activity to be completed after Mutations. This activity contains four sections and the suggested time to complete

More information

Genetics Since Mendel. At dog and cat shows, an animal s owner may be asked to show its pedigree. What do you think a pedigree shows?

Genetics Since Mendel. At dog and cat shows, an animal s owner may be asked to show its pedigree. What do you think a pedigree shows? chapter 35 Heredity section 2 Genetics Since Mendel Before You Read At dog and cat shows, an animal s owner may be asked to show its pedigree. What do you think a pedigree shows? What You ll Learn how

More information

B- indicates dominant phenotype

B- indicates dominant phenotype BIO 208 Genetics 2011 1 Applied Human Genetics Pedigree Analysis Monohybrid Cross Dihybrid Cross Chi Square Analysis Probability Epistasis I. Applied Human Genetics/Single Gene Traits The classical study

More information