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Autosome
An autosome is a non-sex chromosome. It is an ordinarily paired[1] type of 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, allosomes or heterosomes.
Notes
- ^ In the case of higher ploidy levels than the usual diploid, there will be the same number of an autosome as the ploidy level itself. For example, in a pentaploid, there will be five copies of each autosome.
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Human chromosomes |
{1} {2} {3} {4} {5} {6} {7} {8} {9} {10} {11} {12} {13} {14} {15} {16} {17} {18} {19} {20} {21} {22} {X} {Y}
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See also
Classification: Autosome - Sex chromosome
Evolution: Chromosomal inversion - Chromosomal translocation - Polyploidy - Paleopolyploidy
Structure: Chromatin (Euchromatin, Heterochromatin) - Nucleosome - Histone (H1, H2A, H2B, H3, H4) - Centromere - Telomere - Chromatid
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Autosome". A list of authors is available in Wikipedia.
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