A couple has a child with cystic fibrosis, an autosomal recessive disorder. What is the probability that their next child will be a carrier?
Q1. A couple has a child with cystic fibrosis, an autosomal recessive disorder. What is the probability that their next child will be a carrier?
Answer: 2/3
Explanation: Each child has a 2/3 chance of being a carrier or unaffected.