8. mr. krabb and his wife recently had a lil krabby, but it has not been a happy occasion for them. mrs…

8. mr. krabb and his wife recently had a lil krabby, but it has not been a happy occasion for them. mrs. krabb 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 elses baby. mr. krabb 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.\na. list the possible genotypes and phenotypes for their children.\nb. did the hospital make a mistake? explain your answer.

8. mr. krabb and his wife recently had a lil krabby, but it has not been a happy occasion for them. mrs. krabb 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 elses baby. mr. krabb 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.\na. list the possible genotypes and phenotypes for their children.\nb. did the hospital make a mistake? explain your answer.

Answer

Explanation:

Step1: Determine the parents' genotypes

Mr. Krabb's genotype is ( TT ) (homozygous tall). Mrs. Krabb's genotype is ( Tt ) (heterozygous tall).

Step2: Create the Punnett square

( T ) ( T )
( T ) ( TT ) ( TT )
( t ) ( Tt ) ( Tt )

Step3: Analyze genotypes and phenotypes

  • Genotypes: ( TT ) and ( Tt )
  • Phenotypes: All children will have tall eyeballs because the dominant ( T ) masks the recessive ( t ) in ( Tt ) and ( TT ) has two dominant alleles.

Step4: Answer part B

Since all possible offspring from ( TT\times Tt ) have at least one dominant ( T ) allele (genotypes ( TT ) or ( Tt )), and the dominant ( T ) allele gives the tall - eyeball phenotype, a baby with short eyeballs (( tt )) is not possible from these parents.

Answer:

A.

  • Genotypes: ( TT ) and ( Tt )
  • Phenotypes: All children have tall eyeballs. B. Yes, the hospital made a mistake. Because when ( TT ) (Mr. Krabb) and ( Tt ) (Mrs. Krabb) have children, the possible genotypes are ( TT ) and ( Tt ), and the phenotype for both genotypes is tall eyeballs. A baby with short eyeballs (( tt )) cannot be their biological child.