Hemophilia is a blood-clotting disorder in humans that follows an X-linked recessive pattern of inheritance. A man with hemophilia and a woman without hemophilia have a daughter with hemophilia. If you let H represent the common (non-diseasecausing)

allele and h the hemophilia allele, what are the genotypes of the parents?

a. Mother is XHXh and father is XhY.

b. Mother is XhXh and father is XhY.

c. Mother is XhXh and father is XHY.

d. Mother is XHXh and father is XHY