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

question 44

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

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