All healthy humans are born with 46 chromosomes that are part of every cell in the body. Chromosomes are divided into 22 matching pairs and one pair of sex chromosomes. These cell structures each carry the genetic material, or DNA, that makes every individual unique.
You receive genes from both of your biological parents; half from your mother and half from your father. The genes determine which features you inherit, such as hair and eye color, blood type, and other characteristics — like your father’s nose or your mother’s mouth.