MCAT Question A Day - 9/22/14
Color-blindness is a sex-linked recessive trait. A woman who is a carrier for the trait has two boys with a color-blind man. What is the probability that both boys are color-blind?
A. 0%
B. 25%
C. 50%
D. 100%
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Click Here for the solution
Want more questions? - Click here to check out our MCAT Question A Day archive