Genetics: Analysis and Principles 5th Edition by Robert Brooker

Exercise 39

Hemophilia is a blood clotting disorder in humans that follows an X-linked recessive pattern of inheritance. A man with hemophilia and woman without hemophilia have a daughter with hemophilia. If you let H represent the normal allele and h the hemophilia allele, what are the genotypes of the parents
A) Mother is X H X h and father is X h Y
B) Mother is X h X h and father is X h Y
C) Mother is X h X h and father is X H Y
D) Mother is X H X h and father is X H Y.