How do you write the genotype of male haemophilia patient?

Question

How do you write the genotype of male haemophilia patient?

Answer 1

Xh y

h-hemophiliac gene

X for X chromosome

y- for y chromosome denoting that it's a male

Xy matters because hemophilia is s*x- or X-linked disease. It takes 2 recessive genes (h) for a woman to become a hemophiliac, but only 1 for a male since they have a y instead of an X chromosome.

y chromosome carries little genetic material compared to X and it does not carry genes for hemophilia.

Answer 2

Hh or hh