Question

Hemophilia is an x-linked recessive allele causing a blood disorder. if a man without hemophilia and a woman who is a carrier of the disease have a daughter, what are the chances that she will have hemophilia?

Answer 1

X-linked recessive means that an XhXh female HAS hemophilia, but an XHXh female is only a CARRIER.
A man without only gives his X to a daughter, and without means it XH.
The woman is a carrier meaning she's XHXh.
So half of their daughters will be XHXH normal, and the other half will be XHXh carriers. There is a 0% chance of having a daughter with hemophilia (XhXh).