Question

If a color-blind man marries a woman who is a carrier for color blindness, it is most probable that

A. all of their sons will have normal color vision.
B. half of their sons will be color-blind.
C. all of their sons will be color-blind.
D. none of their children will have normal color vision.


The answer is C right?

Answer 1

B. half of their sons will be color-blind.

Step-by-step explanation:

If a color-blind man marries a woman who is a carrier for color blindness, their children will inherit one X chromosome from the mother and one from the father. If a son inherits the abnormal X chromosome from the mother, he will be color-blind. Since the mother has one normal X chromosome and one abnormal X chromosome, there is a 50% chance that a son will inherit the abnormal X chromosome and be color-blind.