What is True About the Sex Chromosomes

Question

What is true about the sex chromosomes?
A) Possession of the Y chromosome determines maleness.
B) Normal females possess two sex chromosomes that look different, X and Y, and normal males possess two sex chromosomes that look the same, X and X.
C) Normal males possess two sex chromosomes that look the same, X and X.
D) Normal females possess two sex chromosomes that look different, X and Y.

Accepted Answer

Possession of the Y chromosome is what typically determines maleness in humans. Normal males have one X and one Y chromosome (XY), while normal females have two X chromosomes (XX).