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Autosomal Genetic Diseases in Wikipedia

Note:Wikipedia is a user-contributed encyclopedia and may not have been reviewed by professional editors (See full Wikipedia disclaimer)

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Autosome". (Source - Retrieved 2006-09-06 16:17:09 from http://en.wikipedia.org/wiki/Autosome)

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Introduction

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.

Uses

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.

See also

edit Evolution of chromosomes
Basic topics: Chromosome | Karyotype | Ploidy | Meiosis
Classification: Autosome | Sex chromosome
Evolution: Chromosomal inversion | Chromosomal translocation | Polyploidy
 

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