Genetics and Heredity Project

Transcription

1 Genetics and Heredity Project Name: Write down the phenotypes of a mother of your choice and the phenotypes of the father of your choice. Use the table on the back of this page to find the genotypes of the traits you have selected for the parents. Table 1: Mothers and Alleles Mothers Name: (Physical ) Gender Female X X Table 2: Fathers and Alleles Fathers Name: (Physical ) Gender Male X Y Using the phenotypes selected above to draw/print and cut out a picture representing the traits of your parents below. Mother Father

2 The following table will be a guide for determining the selected parents genotypes. Once parents have been crossed in the Punnett squares and the genotypes of the offspring have been determined, use this same data table to determine the phenotypes of the offspring. Gender Allele Male Y XY Female X XX Allele DARK L LL DARK TO LB B BB LIGHT TO BG LIGHT g or G gg Allele BLACK L LL DARK BROWN LN BROWN n or N NN LIGHT BROWN bn BLONDE b bb RED-BLONDE br RED r rr Allele BLACK L LL BROWN LB HAZEL BG AMBER B BB BLUE GREEN bg GREEN g or G gg BLUE b bb Allele MANY F FF FEW FN NONE n or N nn Widow's Peak Allele YES- LARGE R RR YES- SMALL RN NONE n or N nn Allele CURLY R RR WAVY RG STRAIGHT g or G gg Allele NARROW N NN NW WIDE w or W ww : Allele UNATTACHED F FF SOMEWHAT ATTACHED FA ATTACHED a or A aa Allele FULL H HH HT THIN t or T tt

3 Genetics and Heredity Project Name: Gender: X Y : X X Male Female : : : :

4 : Widows Peak: : : Now that you have finished crossing the genotypes of your selected parent you can see what genotypes are available for each offspring to inherit. Each punnett square box has an associated number as show below. Follow the directions given by Ms. Braget to play the game that will determine which genotypes the offspring created will inherit

5 Genetics and Heredity Project Name: Write down the genotypes of each offspring as determined by the number game. Use the table on the back of the first page to find phenotypes of your created offspring. Table 2: Offspring 1- and Alleles Name: Table 2: Offspring 2- and Alleles Name: Gender (Physical ) Gender (Physical ) Using the phenotypes determined above to draw/print and cut out a picture representing the traits of your offspring will inherit below. Name: Name:

6 Bikini Bottom Genetics Scientists at Bikini Bottoms have been investigating the genetic makeup of the organisms in this community. Use the information provided and your knowledge of genetics to answer each question. 1. For each genotype below, indicate whether it is a heterozygous (He. Z.) OR homozygous (Ho. Z.). TT Bb DD Ff tt dd Dd ff Tt bb BB FF Which of the genotypes in #1 would be considered purebred? Which of the genotypes in #1 would be hybrids? 2. Determine the phenotype for each genotype using the information provided about SpongeBob. Yellow body color is dominant to blue. Square shape is dominant to round. SS Ss ss 3. For each phenotype, give the genotypes that are possible for Patrick. A tall head (T) is dominant to short (t). Tall = Short = Pink body color (P) is dominant to yellow (p). Pink body = Yellow body = 4. SpongeBob SquarePants recently met SpongeSusie Roundpants at a dance. SpongeBob is heterozygous for his square shape, but SpongeSusie is round. Create a Punnett square to show the possibilities that would result if SpongeBob and SpongeSusie had children. HINT: Read question #2! A. List the possible genotypes and phenotypes for their children. B. What are the chances of a child with a square shape? out of or % C. What are the chances of a child with a round shape? out of or % 5. Patrick met Patti at the dance. Both of them are heterozygous for their pink body color, which is dominant over a yellow body color. Create a Punnett square to show the possibilities that would result if Patrick and Patti had children. HINT: Read question #3! A. List the possible genotypes and phenotypes for their children. B. What are the chances of a child with a pink body? out of or % C. What are the chances of a child with a yellow body? out of or % 6. Everyone in Squidward s family has light blue skin, which is the dominant trait for body color in his hometown of Squid Valley. His family brags that they are a purebred line. He recently married a nice girl who has light green skin, which is a recessive trait. Create a Punnett square to show the possibilities that would result if Squidward and his new bride had children. Use B to represent the dominant gene and b to represent the recessive gene. A. List the possible genotypes and phenotypes for their children. B. What are the chances of a child with light blue skin? % C. What are the chances of a child with light green skin? % D. Would Squidward s children still be considered purebreds? Explain! T. Trimpe