Autosome
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This article is about a type of chromosome. For a method to discover information about a person's ancestry using autosomal DNA, see Genealogical_DNA_test#Geographic_origin_tests.
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An autosome is a chromosome that is not a sex chromosome – that is to say there are an equal number of copies of the chromosome in males and females.[1] For example, in humans, there are 22 pairs of autosomes, but the X and Y chromosomes are sex chromosomes.
| Human chromosomes | |
|---|---|
| Female (XX) | Male (XY) |
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| The are two copies of each autosome (chromosomes 1-22) in both females and males. The sex chromosomes are different: there are two copies of the X chromosome in females, but males have a single X chromosome and a Y chromosome. | |
[edit] See also
[edit] References
- ^ Griffiths, Anthony J. F. (1999). An Introduction to genetic analysis. New York: W.H. Freeman. ISBN 071673771X. http://www.ncbi.nlm.nih.gov/books/bv.fcgi?highlight=autosome&rid=iga.section.222.
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