Cystic fibrosis is inherited as an autosomal recessive. Twoparents without cystic fibrosis have two children with cysticfibrosis and three children without. The parents come to you forgenetic counseling.

What is the probability that their next child will have cysticfibrosis?

Their unaffected children are concerned about beingcarriers. What is the probability that a

given unaffected child in this family is a carrier?

Question

Cystic fibrosis is inherited as an autosomal recessive. Twoparents without cystic fibrosis have two children with cysticfibrosis and three children without. The parents come to you forgenetic counseling.
1. What is the probability that their next child will have cysticfibrosis?
2. Their unaffected children are concerned about beingcarriers. What is the probability that a
  
  given unaffected child in this family is a carrier?

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