Question

A woman is a carrier of the X-linked recessive color blindness gene. she has children with a man with normal color vision. which of the following is true of their offspring?
a. half the daughters will be color blind
b. half the sons will be color blind
c. none of the children will be color blind
d. all the daughters will be color blind
e. all the sons will be color blind

Answer 1

Answer: e

Explanation:

I think it is e because if the father is normal than his X is healthy and so all his daughters who will get his X will be healthy as well because the illness is recessive. But the sons are going to take their mother X that is linked with this gene and they wont get their father’s X , which would have kept them normal.