Question: a man with hemophilia has a normal daughter who marries a normal man?
Answer: A man with hemophilia is XhY where h = hemophilia gene and H = the normal gene. Any daughter with normal phenotype whose father has hemophilia will be a carrier. Her genotype must be: XhXH and NOT XHXH We can use a Punnett square to show the probability of a daughter or son having hemophilia.