Genetics problem: Mom is a carrier of red-green color blindness and Dad is red-green color-blind. What is the chance that their daughter will be color-blind?
A)0%
B)50%
C)75%
D)100%

Question

Quizplus · Accepted Answer

Since the mother is a carrier of red-green color blindness, she has one normal allele and one color-blind allele. The father, being red-green color-blind, has two color-blind alleles. Thus, there is a 50% chance that their daughter will inherit the color-blind allele from the mother and a 50% chance that she will inherit the color-blind allele from the father. Therefore, the daughter has a 50% chance of being color-blind.

Genetics Problem: Mom Is a Carrier of Red-Green Color Blindness