A male zygote results from a(n):
A)X chromosome from the father and a Y chromosome from the mother.
B)X chromosome from the mother and a Y chromosome from the father.
C)X chromosome from each parent.
D)Y chromosome from each parent.

Question

Quizplus · Accepted Answer

The sex of a zygote is determined by the sperm that fertilizes the egg. Sperm carry either an X or a Y chromosome, while eggs always carry an X chromosome. Therefore, if a sperm carrying a Y chromosome fertilizes the egg, the resulting zygote will have one X chromosome from the mother and one Y chromosome from the father, making it male. Thus, the correct option is B - X chromosome from the mother and a Y chromosome from the father.

A Male Zygote Results from A(n)