Q:

Mother having 2 children with CF. What is the risk of getting another baby?

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Mother having 2 children with CF. What is the risk of getting another baby?


  1. 1:2
  2. 1:8
  3. 1:4
  4. 1:16
  5. 1:1

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The key is C. 1:4. [Cystic fibrosis is an autosomal recessive disease. If both parents are carrier there is 1:4 chance of risk of occurrence of the disease for each child].

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