Autosome

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This article is about a type of chromosome. For the ancestral discovery method using autosomal DNA, see Genealogical DNA test#Geographic origin tests.

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 twenty-two pairs of autosomes, and in addition there are X and Y chromosomes which are sex chromosomes.

Human chromosomes
Female (XX)	Male (XY)

There 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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[0] 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.

[1]

Autosome

From Wikipedia, the free encyclopedia

[edit] See also

[edit] References

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