Question

8. Mr. Krabbs and his wife recently bad 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. 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.
A. List the possible genotypes and phenotypes for their children.
B. Did the hospital make a mistake? Explain your answer.

Answer 1

To answer this question, we can create a Punnett square. The genotype of Mr. Krabbs is TT (homozygous dominant), and the genotype of Mrs. Krabbs is Tt (heterozygous). The possible genotypes for their children are TT and Tt, and the corresponding phenotypes would be tall eyeballs for both genotypes. The hospital did not make a mistake.

Step-by-step explanation:

To answer this question, we can create a Punnett square. The genotype of Mr. Krabbs is TT (homozygous dominant), and the genotype of Mrs. Krabbs is Tt (heterozygous). The dominant gene for tall eyeballs is represented by T, and the recessive gene for short eyeballs is represented by t.

The Punnett square would look like this:

TtTTTTtTTTTt

From the Punnett square, we can see that the possible genotypes for their children are TT and Tt. The corresponding phenotypes would be tall eyeballs for both genotypes.

Based on the Punnett square, the hospital did not make a mistake. Both parents have the dominant gene for tall eyeballs, so all of their children will have tall eyeballs as well.

Answer 2

Had this exact same question about 2 or 3 months ago.

1.) TT- 2 Tt-2 tt-0

2.) Yes because it is impossible for their baby to have short eyes because the short eyes trait (tt) is recessive, and using the Punnett Square, it shows that there is no way for them to have a baby with the short eyes trait.

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