A mother who is a carrier for red-green color-blindness and a father with normal vision will produce which of the following offspring?

Question

Quizplus · Accepted Answer

Red-green color blindness is X-linked recessive. A carrier mother has one normal and one mutant allele. A father with normal vision has only normal alleles. Sons inherit their X chromosome from their mother and Y from their father. Therefore, 50% of the sons will inherit the X chromosome carrying the color-blindness allele from their mother, making them color-blind.

A Mother Who Is a Carrier for Red-Green Color-Blindness and a Father