Question

What genes have to be present for cystic fibrosis to occur in a child?

Answer 1

A person must inherit 2 CF genes to have CF disease. When your child was conceived, he or she received a CF gene from both you and your partner. A child can inherit CF only if both parents carry a CF gene (that is, each parent either has CF or is a carrier) and both parents pass the CF gene on to their child.