Humans have 1 pair of heterosomes, also known as sex chromosomes. Males have one X and one Y chromosome (XY), while females have two X chromosomes (XX).
Autosomes are chromosomes that contain genes responsible for general body functions and traits, such as hair color, eye color, and height. They are not involved in determining an individual's sex. Humans normally have 22 pairs of autosomes in addition to the sex chromosomes.