If a woman is a carrier for the colorblind recessive allele and her husband is normal,what are their chances that their son will be color blind?
A)None since the father is normal.
B)50% since the mother is a carrier.
C)100% because the mother is a carrier.
D)None since he will be a carrier like his mother.

Question

Quizplus · Accepted Answer

The son has a 50% chance of being colorblind because he inherits one X chromosome from his mother, who is a carrier, and one Y chromosome from his father. If he inherits the X chromosome carrying the colorblind allele, he will be colorblind.

If a Woman Is a Carrier for the Colorblind Recessive