Question

If the frequency of hemophilia, an X-linked recessive disease, is 10% in males, what is the frequency of females with hemophilia?

Answer 1

From Google

Females can also have hemophilia, but this is much rarer. In such cases both X chromosomes are affected or one is affected and the other is missing or inactive. In these females, bleeding symptoms may be similar to males with hemophilia. A female with one affected X chromosome is a “carrier” of hemophilia.

I could not find the exact incidence of hemophilia in women.