Spongebob Genetics

For each genotype below, identify which are heterozygous.

For each genotype below, identify which are homozygous.

Determine the phenotype for each genotype using the information about Spongebob.

Yellow body is dominant to blue.

YY __________________ Yy __________________ yy __________________

Answer format: YY phenotype, Yy phenotype, yy phenotype

Determine the phenotype for each genotype using the information about Spongebob.

Square shape is dominant to round.

SS __________________ Ss __________________ ss __________________

Answer format: SS phenotype, Ss phenotype, ss phenotype

For each phenotype, give the genotypes that are possible for Patrick.

A tall head (T) is dominant to short (t).

Tall = __________________ Short = __________________

Answer format: tall = answer, answer : short = answer, answer <- you will only have one answer for one of these

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.

List the possible genotypes and phenotypes for their children

Answer format: phenotype (genotype), phenotype (genotype), phenotype (genotype)

What are the chances of a child with a square shape?

What are the chances of a child with a round shape?

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.

List the possible genotypes and phenotypes for their children

Answer format: phenotype (genotype), phenotype (genotype), phenotype (genotype)

What are the chances of a child with a yellow body?

What are the chances of a child with a pink body?

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.

List the possible genotypes and phenotypes for their children

Answer format: phenotype (genotype), phenotype (genotype), phenotype (genotype)

What are the chances of a child with light blue skin?

What are the chances of a child with light green skin?

Would Squidward's children still be considered purebreds? Explain.

Assume that one of Squidward's sons, who is heterozygous for the light blue body color, married a girl that was also heterozygous. Create a punnett square to show the possibilities that would result if they had children.

List the possible genotypes and phenotypes for their children

Answer format: phenotype (genotype), phenotype (genotype), phenotype (genotype)

What are the chances of a child with light green skin?

What are the chances of a child with light blue skin?

Mr. Krabbs and his wife recently had a Lil' Krabby, but it has not been a happy occassion for them. Mrs. Krabbs has been upset since she first saw her new baby who had short eyeballs. She claims that the hospital goofed and mixed up her baby with someone else's baby. Mr. Krabbs is homozygous for his tall eyeballs, while his wife is heterozygous for her tall eyeballs. Some members of her family have short eyes, which is the recessive trait. Create a punnett square using T for the dominant gene and t for the recessive one.

List the possible genotypes and phenotypes for their children

Answer format: phenotype (genotype), phenotype (genotype), phenotype (genotype)

Did the hospital make a mistake? Explain your answer.

Use the information for SpongeBob's traits to write the phenotype (physical appearance) for each item.

LL - ____________________ yy - ____________________ Ss - ____________________ RR - ____________________

Rr - ____________________ ll - ____________________ ss - ____________________ Yy - ____________________

Answer format: LL - phenotype, yy - phenotype, Ss - phenotype, RR - phenotype, Rr - phenotype, ll - phenotype, ss - phenotype, Yy - phenotype

Use the information in the chart to write the genotype (or genotypes) for each trait below:

(a) Yellow body - ________ (b) Roundpants - ________ (c) Oval eyes - ________ (d) Long nose - ________

(e) Stubby nose - ________ (f) Round eyes - ________ (g) Squarepants - ________ (h) Blue body - ________

Answer format: (a) genotype(s), (b) genotype(s), (c) genotype(s), (d) genotype(s), (e) genotype(s), (f) genotype(s), (g) genotype(s), (h) genotype(s)

Determine the genotyps for each using the information in the chart:

(a) Heterozgyous round eyes (b) Purebred squarepants (c) Homozygous long nose (d) Hybrid yellow body

Answer format: (a) genotype, (b) genotype, (c) genotype, (d) genotype

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.

If SpongeGerdy's father is heterozygous squarepants and her mother is a roundpants, what is her genotype? Complete the punnett square to show the possible genotypes.

What is her genotype?

SpongeBillyBob is heterozygous for his squarepants shape. What is his genotype?

Complete the punnett square to show the possibilities that would result if BillyBob & Gerdy had children.

List the possible genotypes and phenotypes for the kids

Answer format: phenotype (genotype), phenotype (genotype), phenotype (genotype)

What are the chances of kids with roundpants?

What are the chances of kids with squarepants?

SpongeBob's aunt and uncle, SpongeWilma and SpongeWilbur, have the biggest round eyes in the family. Wilma is believed to be heterozygous for her round eye shape, while Wilbur's family brags that they are a pure line. Complete the punnett square to show the possibilities that would result if SpongeWilma and SpongeWilbur had children.

Give the genotype for each person

Wilma - _____________ Wilbur - _____________

Answer format: Wilma - genotype, Wilbur - genotype

List the possible genotypes and phenotypes for the kids

Answer format: phenotype (genotype), phenotype (genotype), phenotype (genotype)

What is the probability that the kids would have round eyes?

What is the probability that the kids would have oval eyes?

SpongeBob's mother is so proud of her son and his new wife, SpongeSusie, as they are expecting a little sponge. She knows that they have a 50% chance of having a little roundpants, but is also hoping the new arrival will be blue (a recessive trait) like SpongeSusie and many members of her family. If SpongeBob is heterozygous for his yellow body color, what are the chances that the baby sponge will be blue? Create a punnett square to help you answer this question.

What are the chances that the baby sponge will be blue?

SpongeBob's aunt is famous around town for her itty, bitty stubby nose! She recently met a cute squarepants fellow who also has a stubby nose, which is a recessive trait. Would it be possible for them to have a child with a regular long nose? Why or why not? Use the punett square to help you answer this question.

Would it be possible for them to have a child with a regular long nose? Why or why not?

If SpongeBob's aunt described above wanted children with long noses, what type of fellow would she need to marry in order to give her the best chances? Create a punnett square to help you answer this question.

What type of fellow would she need to marry in order to give her the best chances?