What could the genetic counselor tell the couple to help them understand how their children inherited cystic fibrosis?
One of you has a mother who is also a carrier of cystic fibrosis.
One of you has a father who is also a carrier of cystic fibrosis.
Both of you have either a mother or a father who is also a carrier of cystic fibrosis.
Both of you had a mutation of the cystic fibrosis gene in a cell that divides to form gametes.