14. A man and woman are each heterozygous for the autosomal recessive disorder cystic fibrosis. If they want
to have three children, what is the probability that only one of the children will have cystic fibrosis?
(A) 1/4
(B) 3/4
(C) 9/16
(D)9/64
(E)27/64
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統計: A(0), B(0), C(0), D(1), E(0) #2778303
統計: A(0), B(0), C(0), D(1), E(0) #2778303