Question

A couple has just learned that their daughter has hemophilia. They already have a son who does not have the disease. What are the genotypes of the couple? Explain your reasoning.

Answer 1

They are both likely carriers of the disease, therefore they'd have the recessive gene somewhere but not on both chromosomes of the homologous pair.

Answer 2

Actually they both have to be* it isn't just 'likely' lol