Which best describes the sex chromosomes in humans?
A. Females have one X and one Y chromosome.
B. Males have two Y chromosomes.
C. Males have two different chromosomes.
D. Males have two X chromosomes.
Which best describes the sex chromosomes in humans?
A. Females have one X and one Y chromosome.
B. Males have two Y chromosomes.
C. Males have two different chromosomes.
D. Males have two X chromosomes.