50%.
First off, XhY means hemophilia for a male. The father has hemophilia, making him XhY. The mother doesn't have it, but must be a carrier because her father had it. This makes her XHXh.
Sons only receive a Y from their father, and either X from their mother. So theirs sons will either be XHY (normal) or XhY (hemophiliac).
Answer: a eukaryotic cell that can make its own food
Explanation:
Answer:
Helium
It will not easily react with other elements as it is a noble gas. it has complete octate .the reactivity of an element depends on its outer most electron, ( or valency of it) but in helium there is no electron left to react.
