Hemophilia is an X-linked recessive disorder. Since the daughter
inherits one copy of X chromosome from each of her parents, and with
hemophilia being a recessive disease, the daughter must inherit both
copies of recessive hemophilic gene.
X-linked hemophilic gene: X₀
Genotype of mother: X₀X
Genotype of father: X₀Y
Genotype of daugher: X₀X₀
