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Bikini Bottom Genetics

Total questions: 16

Worksheet time: 43mins

Name
Class
Date
1.

Scientists in Bikini bottom are investigating the genetic makeup of the organisms in their community. Select all of the genotypes below that are heterozygous.

a)

TT

b)

Bb

c)

DD

d)

fF

e)

tt

2.

Scientists in Bikini bottom are investigating the genetic makeup of the organisms in their community. Select all of the genotypes below that are homozygous dominant

a)

Dd

b)

ff

c)

BB

d)

tT

e)

TT

3.

Scientists in Bikini bottom are investigating the genetic makeup of the organisms in their community. Select all of the genotypes below that are homozygous recessive

a)

bb

b)

dd

c)

BB

d)

tT

e)

tt

4.

For sponges like Spongebob, yellow "skin" is dominant to blue. If a sponge has the genotype of Yy, the phenotype would be.

a)

Yellow skin

b)

Blue skin

5.

For sponges like Spongebob, yellow "skin" is dominant to blue. If a sponge has the genotype of yy, the phenotype would be.

a)

Yellow skin

b)

Blue skin

6.

For starfish like Patrick, a long head is dominant to a short one. Select all genotypes that would result in a starfish having a LONG head.

a)

rr

b)

Rr

c)

rR

d)

RR

7.

For starfish like Patrick, a pink body is recessive to a yellow body. Select all genotype(s) that would result in a starfish having a PINK body.

a)

pp

b)

Pp

c)

pP

d)

PP

8.

For sponges, having a square shape is dominant to a round shape. SpongeBob SquarePants (heterozygous for his square shape) mates with SpongeSusie RoundPants (round shaped). Create a Punnett Square to determine the possible offspring these two could have. Select all the genotypes that are possible for their offspring.

a)

ss

b)

Ss

c)

SS

9.

For sponges, having a square shape is dominant to a round shape. SpongeBob SquarePants (heterozygous for his square shape) mates with SpongeSusie RoundPants (round shaped). Create a Punnett Square to determine the possible offspring these two could have. What are the odds of their offspring being square shaped?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

10.

Patrick meets Lucy at the dance. Both are heterozygous for pink body colour, which is dominant over yellow. Create a Punnett square to show the possibilities if Patrick and Lucy had children. Select all the possible genotypes for their offspring:

a)

homozygous recessive

b)

heterozygous

c)

homozygous dominant

11.

Patrick meets Lucy at the dance. Both are heterozygous for pink body colour, which is dominant over yellow. Create a Punnett square to show the possibilities if Patrick and Lucy had children. What are the odds of them having a yellow bodied child?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

12.

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. What are the genotypes for their possible children?

a)

4bb

b)

2Bb, 2bb

c)

1BB, 2Bb, 1bb

d)

4 Bb

e)

2BB, 2Bb

13.

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. What are the odds of them having a light green skinned child?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

14.

Mr. Krabbs and his wife recently had a Lil’ Krabby, but it has not been a happy occasion 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. Did the hospital make a mistake?

a)

Yes

b)

No

c)

Not enough information given

15.

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. What are the possible phenotypes for their children

a)

only a blue body is possible

b)

both light blue and light green bodies are possible

c)

only light green bodies are possible

d)

not enough information given

16.

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. What are the odds of their child being blue?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%