Autopolyploid
A polyploid that originates by the multiplication of one basic set of chromosomes.

Autosomal recessive I dominant
Patterns of inheritance in which females are as likely to be affected as males. In recessive disorders, one gene (of the pair) needs to function properly to prevent the disorder. For a dominant disorder, one gene functioning abnormally is sufficient to cause the disorder.

Autoradiography
A technique that uses X-ray film to visualize radioactively labeled molecules or fragments of molecules; used in analyzing length and number of DNA fragments after they are separated by gel electrophoresis.

2. Any chromosome found in the cell nucleus other than the sex chromosomes. Humans typically have 22 pairs.
3. Any chromosome other than the sex chromosomes. In humans, there are 22 pairs of autosomes.
Any chromosome other than a sex chromosome.
4. Any of the "numbered" chromosomes -- not the X, Y, or mitochondrial chromosomes. Each human has two copies of each; one inherited from the mother and one from the father. The image below is a schematic drawing of all the human chromosomes (except the mitochondrial chromosome). The autosomes are the chromosomes labeled with numbers. Every cell in the body has two copies of each autosome (with a few exceptions.)