- Pertaining to a chromosome that is not a sex chromosome; relating to any one of the chromosomes save the sex chromosomes. People normally have 22 pairs of autosomes (44 autosomes) in each cell together with two sex chromosomes (X and Y in the male and XX in the female). Examples: An autosomal gene is a gene on an autosome. Most single genes describe an autosomal pattern of inheritance. Huntington disease is an autosomal dominant trait. Cystic fibrosis is an autosomal recessive trait.
* * *Pertaining to an autosome.
Medical dictionary. 2011.