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Beth and Tom each have a sibling with cystic fibrosis, but neither Beth nor Tom nor any
Chapter 14, Problem 1(choose chapter or problem)
QUESTION:
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.
Questions & Answers
QUESTION:
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.
ANSWER:The probability that if this couple has a child, the child will have cystic fibrosis is approximately 1 in 4,000, or 0.025%.
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