Question

all girls have two x chromosomes from their mother, and a y chromosome from their father
a false
b true
c only if the mother is an egg donor
d true in most of the cases

Explanation:

Human females have a pair of X chromosomes (\(XX\)). One X chromosome comes from the mother (since the mother has \(XX\) and donates one X) and the other X chromosome comes from the father (the father has \(XY\) and donates the X, not the Y. If the father donated the Y, the offspring would be male \(XY\)). So the statement in the question is incorrect.

Answer:

a. False