Males have ________ and females have ________.

A) one X chromosome;one Y chromosome
B) one Y chromosome;one X chromosome
C) one X chromosome;two X chromosomes
D) one Y chromosome;two Y chromosomes

Y Chromosome

The sex chromosome typically found only in males. When paired with an X chromosome from the mother, it produces a male child.

X Chromosome

The sex chromosome found in both males and females. Females typically have two X chromosomes; males typically have one. An X chromosome from each parent produces a female child.