Hemophilia is caused by an X-linked recessive gene. A normal woman whose father had hemophilia marries a normal man. What are the chances of hemophilia in their children?
A. All females would be normal.
B. All females would be carriers.
C. All males would have hemophilia.
D. All females would have hemophilia.
E. Half of the women would have hemophilia.
Answer: A
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