Any chromosome within the 22 pairs of non-sex (not X or Y) chromosomes inherited by every individual from their biological parents.

An autosome is a chromosome (or DNA package) that does not play a primary role in determining a person's sex (i.e., not an X or Y chromosome). Autosomal recessive and autosomal dominant diseases are caused by mutations in genes that reside on one of the 22 paired autosomes.