If a woman is a carrier for the color blind recessive allele and her husband is normal,what are their chances that a son will be color blind?
A) None since the father is normal.
B) 50%, since the mother is only a carrier.
C) 100% because the mother has the gene.
D) 25% because the mother is a hybrid.
E) None since the son will also be just a carrier.

Question

Quizplus · Accepted Answer

The Mother is X^BX^b and the Father is X^BY. With this combination of genotypes any son will have a 50% chance of inheriting the color blind allele since the father can only give the Y chromosome and the mother can give either the normal allele or the color blind allele.Bloom's

If a Woman Is a Carrier for the Color Blind