申論題內容
4. A couple wants to start a family, but they are concerned that their child might have cystic
fibrosis, which is a recessive trait.. After taking a family history, you determine that
while neither of them have the disease, the woman had a sister with cystic fibrosis (with
unaffected parents), and the man's father also had cystic fibrosis. What do you tell them?
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