MCAT Question A Day - 9/24/14 - Answer!
Sickle cell anemia is an autosomal recessive disease. A male with the disease and a female that is not diseased, but carries the trait, produce two girls. What is the probability that neither girl carries a recessive allele?
A. 0%
B. 25%
C. 50%
D. 66%
A is correct. Both girls must carry the trait because they receive their father's recessive chromosome.
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A is correct. Both girls must carry the trait because they receive their father's recessive chromosome.
Want more questions? - Click here to check out our MCAT Question A Day archive
