Beth and Tom each have a sibling with cystic fibrosis, but
Chapter 14, Problem 14.14(choose chapter or problem)
Beth and Tom each have a sibling with cystic fibrosis, but neither Beth nor Tom nor any of their parents have the disease. Calculate the probability that if this couple has a child, the child will have cystic fibrosis. What would be the probability if a test revealed that Tom is a carrier but Beth is not? Explain your answers.
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