A recessive allele causes Cystic fibrosis. A man with cystic fibrosis had a son with a normal phenotype. The son marries a woman (unrelated to him) with a normal phenotype. If a normal odds of an heterozygote of getting cystic fibrosis is 1/50, what are the odds that couple’s first child will get the disease? And if their first child gets the disease, what can we predict about the odds of the next child getting the disease? Please explain well how to figure this out.