Cystic Fibrosis

Cystic Fibrosis ( 34 Questions)

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Question 5 :

A nurse is counseling a couple planning to start a family, and both partners have a family history of cystic fibrosis (CF). What should the nurse advise the couple regarding the genetic risk of having a child with CF?

A "You both have a family history of CF, so it is impossible for your child to inherit the condition."

Incorrect. Both partners having a family history of CF increases the likelihood of carrying CF gene mutations, making it possible for their child to inherit the condition.

B "Since you both carry a single CF gene mutation, your child has a 100% chance of developing CF."

Incorrect. Having a single CF gene mutation (carrier status) does not guarantee that a child will develop CF; it requires inheriting two CF gene mutations, one from each parent.

C "Your child will inherit CF only if both of you pass on a copy of the CF gene mutation."

Correct. CF is an autosomal recessive genetic disorder, which means that a child will have CF only if they inherit two copies of the CF gene mutation, one from each parent.

D "The risk of your child having CF is solely determined by the mother's genetic history."

Incorrect. The risk of a child having CF is determined by both parents' genetic history, not solely the mother's.

Cystic Fibrosis

Cystic Fibrosis ( 34 Questions)

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