Question

The pedigree below tracks the presence of dimples through a family's generation. If individual III-3 married a woman who was heterozygous for dimples, what is the percent chance their children will have dimples?

a) 0%
b) 25%
c) 75%
d) 100%

Answer 1

If individual III-3 married a woman who was heterozygous for dimples, their children will have a 25% chance of having dimples.

Step-by-step explanation:

If individual III-3 married a woman who was heterozygous for dimples, their children will have a 25% chance of having dimples. Dimples are inherited as a dominant trait, meaning that a child can have dimples even if only one parent carries the dominant allele. In this case, individual III-3 is homozygous dominant (DD) for dimples, while the woman is heterozygous (Dd). When they have offspring, there is a 50% chance for each child to inherit the dominant allele and have dimples, and a 50% chance to inherit the recessive allele and not have dimples.