Bikini Bottom: Blood Type Genetics And Codominance (Page 6 of 6) in pdf

Bikini Bottom Genetics: Incomplete Dominance

SpongeBob is growing flowers for his pal Sandy. Her favorite flowers, Poofkins, are found in red,

blue, and purple varieties. The red Poofkins are purebred RR, and the blue Poofkins are purebred

rr. Purple Poofkins result from the heterozygous genotype. Purple Poofkins are an example of

incomplete dominance: the dominant allele and the recessive both affect the phenotype, and what

you see is a blend of both alleles.

1. Write the correct genotype for each color of Poofkin:

a. Red: _____

b. Blue: _____

c. Purple: _____

2. What would happen if SpongeBob crossed a red Poofkin with a blue Poofkin? Create a

Punnett square to determine the percent chance of producing red, blue, and purple flowers.

3. What would happen if SpongeBob crossed two purple Poofkins? Create a Punnett square to

determine the percent chance of producing red, blue, and purple flowers.

4. What would happen if SpongeBob crossed a purple Poofkin with a blue Poofkin? Create a

Punnett square to determine the percent chance of producing red, blue, and purple flowers.

SpongeBob and Patrick love to go jellyfishing at Jellyfish Fields. The fields are home to a special

type of green jellyfish, and only really great jellyfishermen are lucky enough to catch some on

every trip because many of the jellyfish are yellow, QQ, or blue, qq. The jellyfish that are green

have that color as a result of incomplete dominance.

5. What would happen if SpongeBob and Patrick crossed two green jellyfish? Create a

Punnett square to determine the percent chance of producing yellow, blue, and green

jellyfish.

6. What would happen if they crossed a yellow jellyfish with a green jellyfish? Create a Punnett

square to determine the percent chance of producing yellow, blue, and green jellyfish.

7. What would happen if they crossed a blue jellyfish with a yellow jellyfish? Create a Punnett

square to determine the percent chance of producing yellow, blue, and green jellyfish.

8. What would happen if they crossed a blue jellyfish with a green jellyfish? Create a Punnett

square to determine the percent chance of producing yellow, blue, and green jellyfish.

Bikini Bottom: Blood Type Genetics And Codominance Page 6