Hemophilia is caused by an X-linked recessive mutation in humans.If a woman whose paternal uncle (father's brother)was a hemophiliac marries a man whose brother is also a hemophiliac, what is the probability that their first child will have hemophilia? (Assume that no other cases of hemophilia and no hidden carriers exist in the pedigree. )
A)0
B)1/4
C)1/2
D)1/8
E)1

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The Answer of Hemophilia is caused by an X-linked recessive mutation in humans.If a woman whose paternal uncle (father's brother)was a hemophiliac marries a man whose brother is also a hemophiliac, what is the probability that their first child will have hemophilia? (Assume that no other cases of hemophilia and no hidden carriers exist in the pedigree. )
A)0
B)1/4
C)1/2
D)1/8
E)1

Hemophilia Is Caused by an X-Linked Recessive Mutation in Humans