Question

f both parents each carry one mutated CFTR gene, Choose... of their children will probably have cystic fibrosis, Choose... of their children will probably be carriers, and Choose... of their children will probably not have cystic fibrosis or carry the mutated gene.

Answer 1

1/4 of their children will have CF and 3/4 will not have CF or be carries of the disease (1/4 technically won't even carry the mutation)

Step-by-step explanation:

F dominant - f recessive

F f

I

F FF I Ff

-------------------------------

f Ff I ff

I