Question

Cystic fibrosis is an autosomal recessive disease. if parents, both suffering from cystic fibrosis, have children, what is the probability that one of their children will have the disease?

a.25%
b.50%
c.75%
d.100%

Answer 1

If both parents have it, and it's recessive for both of them, I would think that there's a 100% chance of at least one of their children getting it.