A mother with normal vision (not a carrier for color-blindness) and a father who is color-blind will produce which of the following offspring?

Question

Quizplus · Accepted Answer

Color-blindness is an X-linked recessive trait. Since the mother has normal vision and is not a carrier, she can only pass on a normal X chromosome. The father, being color-blind, can only pass on the X chromosome with the color-blindness allele to his daughters (making them carriers, as they receive a normal X from their mother) and a Y chromosome to his sons (who will not be color-blind, as they inherit their X chromosome from their mother). Therefore, 100% of the daughters will be carriers for color-blindness.

A Mother with Normal Vision (Not a Carrier for Color-Blindness)