For this problem, you may want to create a Punnett Square on a separate piece of paper. Assume brown eyes are dominant to blue eyes and dimples are dominant to no dimples. John has brown eyes, and his mother has blue eyes. John does not have dimples. Zena has blue eyes and also has no dimples. What are the chances if this couple have children, they will produce a child with blue eyes and no dimples?
A) 0
B) ¼
C) ½
D) ¾
E) There is not enough information provided to solve this problem.

Question

Quizplus · Accepted Answer

John's genotype for eye color is Bb (since he has brown eyes but his mother has blue eyes), and for dimples, it is dd (since he does not have dimples). Zena's genotype for eye color is bb (since she has blue eyes), and for dimples, it is dd (since she has no dimples). The possible genotypes for their children are Bbdd, bbdd, BbDd, and bbDd. The chance of having a child with blue eyes (bb) and no dimples (dd) is ½.

For This Problem, You May Want to Create a Punnett