Both members of a couple know that they are carriers of
Chapter 14, Problem 14.18(choose chapter or problem)
Both members of a couple know that they are carriers of the cystic fi- brosis allele. None of their three children has cystic fibrosis, but any one of them might be a carrier. They would like to have a fourth child but are worried that it would very likely have the disease, since the first three do not. What would you tell the couple? Would it remove some more uncertainty in their prediction if they could find out from genetic tests whether the three children are carriers?
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