If a color-blind (X-linked recessive trait)man marries a woman who is heterozygous for the trait,what proportion of their male offspring can be expected to be color blind?
A)1/2
B)1/4
C)1/8
D)All
E)None

Question

Quizplus · Accepted Answer

Since color blindness is an X-linked recessive trait, all male offspring inherit their X chromosome from their mother. If the mother is heterozygous, there is a 50% chance she will pass on the allele for color blindness to each male child.

If a Color-Blind (X-Linked Recessive Trait)man Marries a Woman Who