A Man Who Carries an Allele of an X-Linked Gene

Question

A man who carries an allele of an X-linked gene will pass it on to whom?
A)all of his daughters
B)half of his daughters
C)half of his sons
D)all of his sons
E)all of his children

Accepted Answer

A man will pass an X-linked allele to all of his daughters because daughters inherit one X chromosome from their father. Sons inherit the Y chromosome from their father, not the X chromosome.