Study Biology

Question 1

(Multiple Choice)

One form of hemophilia is caused by a sex- linked recessive gene.Assume that a man with hemophilia marries a phenotypically normal woman whose father had hemophilia.What is the probability that their first son will have hemophilia?


A)1/4
B)1/16
C)1/8
D)3/4
E)1/2

Answer

E

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