If a Daughter Expresses an X-Linked Recessive Gene, She Probably

Question

If a daughter expresses an X-linked recessive gene, she probably inherited the trait from:
A) her mother.
B) her father.
C) both parents.
D) neither parent.
E) her grandmother.

Accepted Answer

For a daughter to express an X-linked recessive trait, she must inherit one copy of the recessive gene from each parent, as females have two X chromosomes (one from each parent).