Autosomal Genetic Diseases in Wikipedia
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It uses material from the Wikipedia article "Autosome".
(Source - Retrieved 2006-09-06 16:17:09 from http://en.wikipedia.org/wiki/Autosome)
An autosome is a non-sex chromosome. It is an ordinary paired chromosome that is the same in both sexes of a species. For example, in humans, there are 22 pairs of autosomes. The X and Y chromosomes are not autosomal.
Non-autosomal chromosomes are usually referred to as sex chromosomes or, less frequently, as gonosomes.
An autosomal dominant gene is one on an autosome that is always expressed, even if a single copy exists. The chance is 1 in 2 (50%) for passing this autosomal dominant gene to a particular offspring. There are 23 pairs of chromosomes in humans.
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