In Humans, the Genes for Red-Green Color Blindness (R =

Multiple Choice

In humans, the genes for red-green color blindness (R = normal, r = color blind) and hemophilia A (H = normal, h = hemophilia) are both X-linked and only 3 map units apart.
-A woman whose mother is color blind and whose father has hemophilia A is pregnant with a boy.If the alleles for color blindness and hemophilia A are rare in the population, what is the probability that the baby will have normal vision and normal blood clotting?

A) 0
B) 0.03
C) 0.485
D) 0.47
E) 0.015