1. A - long nose, B - blue body, C - squarepants, D - round eyes, E - round eyes, F - stubby nose, G -roundpants, h - yellow body
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- Blaise Daniel
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1 SPONGE BOB GENETICS
2 1. Use the information for SpongeBob s traits to write the phenotype (physical appearance) for each item. (a) LL- (e) Rr- (b) yy- (f) ll- (c) Ss- (g) ss- (d) RR - (h) Yy - 1. A - long nose, B - blue body, C - squarepants, D - round eyes, E - round eyes, F - stubby nose, G -roundpants, h - yellow body
3 2. Use the information in the chart in #1 to write the genotype (or genotypes) for each trait below. (a) Yellow body - (e) Stubby nose - (b) Roundpants - (f) Round eyes - (c) Oval eyes - (g) Squarepants - (d) Long nose - (h) Blue body - 2. A - Yy & YY, E - ll B - ss, F - RR & Rr C - rr, G - SS & Ss D - LL & Ll, H yy
4 3. Determine the genotypes for each using the information in the chart in #1. (a) Heterozygous round eyes - (c) Homozygous long nose - (b) Purebred squarepants - (d) Hybrid yellow body - 3. A - Rr, C - LL, B - SS, D - Yy
5 4. One of SpongeBob s cousins, SpongeBillyBob, recently met a cute squarepants gal, SpongeGerdy, at a local dance and fell in love. Use your knowledge of genetics to answer the questions below. (a)if SpongeGerdy s father is a heterozygous squarepants and her mother is a roundpants, what is her genotype? Complete the Punnett square to show the possible genotypes that would result to help you determine Gerdy s genotype. What is Gerdy s genotype?
6 4 s s S Ss Ss ss ss s Gerdy has to be Ss because the problem says she is a squarepants.
7 4b (b) SpongeBillyBob is heterozygous for his squarepants shape. What is his genotype? 4B - BillyBob s genotype = Ss
8 S S S S SS SS SS SS (c) Complete the Punnett square below to show the possibilities that would result if Billy Bob & Gerdy had children. (d) List the possible genotypes and phenotypes for the kids. SS, Ss, ss (e) What is the probability of kids with squarepants? 75% (f) What is the probability of kids with roundpants? 25%
9 SpongeBob s aunt and uncle, SpongeWilma and SpongeFred, have the biggest long nose in thefamily. Long noses are dominant to button noses. Long nose= dominant= Button nose= recessive= Wilma is believed to be heterozygous for her long nose, while Fred s family brags that they are a purebred line. Phenotype: SpongeFred x Sponge Wilma Genotype: SpongeFred x Sponge Wilma
10 SpongeBob s aunt and uncle, SpongeWilma and SpongeFred, have the biggest long nose in thef amily. Long noses are dominant to button noses. Long nose= dominant= L Button nose= recessive= l Wilma is believed to be heterozygous for her long nose, while Fred s family brags that they are a purebred line. Phenotype: SpongeFred Long x Sponge Wilma Long Genotype: SpongeFred LL x Sponge Wilma Ll
11 One of SpongeBob s cousins, SpongeBillyBob, recently met a cute squarepants gal, SpongeGerdy, at a local dance and fell in love. SpongeBillyBob is heterozygous for his blue pants, while SpongeGerdy is a pink pants gal. Blue pants are dominant represented by a and pink pants are recessive- represented by. Phenotype: SpongeBillyBob x Sponge Gerdy Genotype: SpongeBillyBob x Sponge Gerdy
12 One of SpongeBob s cousins, SpongeBillyBob, recently met a cute squarepants gal, SpongeGerdy, at a local dance and fell in love. SpongeBillyBob is heterozygous for his blue pants, while SpongeGerdy is a pink pants gal. Blue pants are dominant represented by a B and pink pants are recessive- represented by b Phenotype: SpongeBillyBob Blue x Sponge Gerdy Pink Genotype: SpongeBillyBob Bb x Sponge Gerdy bb
13 Everyone in Squidward s family has tentacles, which is the dominant trait for body shape with no tentacles being recessive. Tentacles= dominant= T No tentacles= recessive= t His family brags that they are the only real hybrid family. He recently married a nice girl who also is hybrid for tentacles. Phenotype: Squidward Tentacles x Squidward s wife Tentacles Genotype: Squidward Tt x Squidward s wife Tt
14 Everyone in Squidward s family has tentacles, which is the dominant trait for body shape with no tentacles being recessive. Tentacles= dominant= No tentacles= recessive= His family brags that they are the only real hybrid family. He recently married a nice girl who also is hybrid for tentacles. Phenotype: Squidward x Squidward s wife Genotype: Squidward x Squidward s wife
15 Mr. Krabbs and his wife are trying to have a Lil Krabby. Mr. Krabbs is homozygous for his skinny eyeballs, while his wife. is heterozygous for her skinny eyeballs. Some members of her family have wide eyes, which is the recessive trait, with skinny eyeballs being dominant Skinny eyeballs = dominant= Wide eyeballs = recessive= Phenotype: Mr. Krabb x Mrs. Krabb Genotype: Mr. Krabb x Mrs. Krabb
16 Mr. Krabbs and his wife are trying to have a Lil Krabby. Mr. Krabbs is homozygous for his skinny eyeballs, while his wife. is heterozygous for her skinny eyeballs. Some members of her family have wide eyes, which is the recessive trait, with skinny eyeballs being dominant Skinny eyeballs = dominant= S Wide eyeballs = recessive= s Phenotype: Mr. Krabb skinny x Mrs. Krabb skinny Genotype: Mr. Krabb SS x Mrs. Krabb Ss
17 Patrick recently married Helga in the pineapple under the sea. It was a beautiful wedding! Patrick is homozygous for his pointy head, but Helga is homozygous for her square head. Pointy head= dominant= Square head= recessive= Phenotype: Patrick x Helga = baby Genotype: Patrick x Helga = baby They want to know the shape of their baby s head.
18 Patrick recently married Helga in the pineapple under the sea. It was a beautiful wedding! Patrick is homozygous for his pointy head, but Helga is homozygous for her square head. Pointy head= dominant= P Square head= recessive= p Phenotype: Patrick pointy x Helga square Genotype: Patrick PP x Helga pp They want to know the shape of their baby s head.
19 Plankton is famous around town for his huge eye, a dominant trait! His new girlfriend Claudette is very cute, but has 2 very small eyes, which is a recessive trait. Huge eyes= dominant= Small eyes= recessive= Phenotype: Plankton x Claudette Genotype: Plankton x Claudette Would it be possible for them to have a child that is purebred for one huge eye? Why or why not?
20 Plankton is famous around town for his huge eye, a dominant trait! His new girlfriend Claudette is very cute, but has 2 very small eyes, which is a recessive trait. Huge eyes= dominant= H Small eyes= recessive= h Phenotype: Plankton Huge x Claudette small Genotype: Plankton HH or Hh x Claudette hh Would it be possible for them to have a child that is purebred for one huge eye? Why or why not? No, Claudette would give the allele h. The child would need to get a H from both Plankton and Claudetter to be purebred for a huge eye
21 The most common form of Dwarfism is called Achondroplasia and is a dominant allele. Normal height is recessive. What are the chances that Matt Rolof, who is a heterozygous dwarf, and his wife Amy, also a heterozygous dwarf, would have a child with normal height? Achondroplasia= dominant= normal height = recessive= Phenotype: Matt Rolof x Amy Genotype: Matt Rolof x Amy Child?
22 The most common form of Dwarfism is called Achondroplasia and is a dominant allele. Normal height is recessive. What are the chances that Matt Rolof, who is a heterozygous dwarf, and his wife Amy, also a heterozygous dwarf, would have a child with normal height? Achondroplasia= dominant= A normal height = recessive= a Phenotype: Matt Rolof dwarf x Amy dwarf Genotype: Matt Rolof Aa x Amy Aa Child? 25% chance of having a normal height child
23 Review Coat color in Tigers Dominant trait: Symbol: O Recessive Trait: white Symbol: Orange tiger: or White tiger:
24 Fill in the Blank Genotype Phenotype Purebred tall Yy RR Green seeds Gray seed coat color
25 Fill in the Blank Genotype TT Yy Rr yy GG or Gg Phenotype Purebred tall Yellow seed color Round shape Green seeds Gray seed coat color
26 Ear Lobes Free - dominant Attached - recessive
27 Ear Lobes Free - dominant = FF or Ff Attached recessive = ff
28 Hair on fingers Hair on fingers - dominant NO hair on fingers - recessive
29 Hair on fingers Hair on fingers dominant = NO hair on fingers recessive = hh HH or Hh
30 Widow s Peak Widow s peak - dominant No widow s peak - recessive
31 Widow s Peak Widow s peak dominant = WW or Ww No widow s peak recessive = ww
32 Hair Curly hair dominant Straight hair recessive
33 Hair Curly hair dominant = CC or Cc Straight hair recessive = cc
34 Chin Cleft chin - dominant Smooth chin - recessive
35 Chin Cleft chin dominant = CC or Cc Smooth chin recessive = cc
36 PTC Can taste PTC paper - dominant Can NOT taste PTC paper - recessive
37 PTC Can taste PTC paper dominant = TT or Tt Can NOT taste PTC paper recessive = tt
38 Trait 1 Table # Symbol Alleles Trait 2 Table # Symbol Allele Free ear lobes 1 Attached ear lobes 2 Hair on fingers Widow s Peak 3 No hair on fingers 5 No widow s peak 4 6 Curly hair 7 Straight Hair 1 Cleft Chin 2 Smooth Chin 3 Can taste PTC paper 4 Can NOT taste PTC paper 5
39 Trait 1 Free ear lobes Table # Symbol Alleles Trait 2 Table # 1 F FF Ff Attached ear lobes Symbol Allele 2 f ff Hair on fingers 3 H HH Hh No hair on fingers 4 h hh Widow s Peak 5 W WW Ww No widow s peak 6 w ww Curly hair 7 C CC Cc Cleft Chin 2 C CC Cc Straight Hair 1 c cc Smooth Chin 3 c cc Can taste PTC paper 4 T TT Tt Can NOT taste PTC paper 5 t tt
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