If the two parents are each heterozygous for widow's peak and having freckles, what is the chance that any of their children will have the same phenotype?
A) 9/16
B) 3/16
C) 1/2
D) 1/16

Question

Quizplus · Accepted Answer

Widow's peak and having freckles are both dominant traits. Each parent being heterozygous means they have one dominant and one recessive allele for each trait. When crossing two heterozygotes for each trait, the probability that a child will exhibit both dominant phenotypes (widow's peak and freckles) is 3/4 (for widow's peak) * 3/4 (for freckles) = 9/16.

If the Two Parents Are Each Heterozygous for Widow's Peak