Hemophilia is a sex-linked recessive gene that causes a blood disorder. What are the chances that the daughter of a normal man and heterozygous woman will have hemophilia?
The chances are 0%. Since hemophilia is a sex-linked recessive gene and the father is normal, he would have the genotype XY. The mother is heterozygous, so she would have the genotype X^HX. This means she can pass on either a normal X chromosome or a carrier X chromosome to her offspring. The daughter would need to inherit the X chromosome with the hemophilia gene from both parents in order to have hemophilia, which is not possible in this scenario.
