Red-green color blindness is a sex-linked recessive trait in humans. If a carrier female (heterozygous for the trait) mated with an affected male, what would be the expected outcome(s)?

Question

Quizplus · Accepted Answer

A carrier female (X^NX^n) and an affected male (X^nY) can produce daughters who are either carriers (X^NX^n) or affected (X^nX^n), so half of the daughters would be color blind. Sons would either be unaffected (X^NY) or affected (X^nY), so half of the sons would be color blind, not all.

Red-Green Color Blindness Is a Sex-Linked Recessive Trait in Humans