Autosome: Difference between revisions
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{{Otheruses4|a type of [[chromosome]]|a method to discover information about a person's ancestry using autosomal DNA| |
{{Otheruses4|a type of [[chromosome]]|a method to discover information about a person's ancestry using autosomal DNA|Genealogical DNA test#Geographic origin tests}} |
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{{Onesource|date=June 2009}} |
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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.<ref>{{Cite book | last=Griffiths | first=Anthony J. F. | authorlink=Anthony J. F. Griffiths | coauthors= | title=An Introduction to genetic analysis | date=1999 | publisher=W.H. Freeman | location=New York | isbn=071673771X | pages= | url=http://www.ncbi.nlm.nih.gov/books/bv.fcgi?highlight=autosome&rid=iga.section.222}}</ref> For example, in [[human]]s, there are 22 pairs of autosomes, but the [[X chromosome|X]] and [[Y chromosome]]s are sex chromosomes. |
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.<ref>{{Cite book | last=Griffiths | first=Anthony J. F. | authorlink=Anthony J. F. Griffiths | coauthors= | title=An Introduction to genetic analysis | date=1999 | publisher=W.H. Freeman | location=New York | isbn=071673771X | pages= | url=http://www.ncbi.nlm.nih.gov/books/bv.fcgi?highlight=autosome&rid=iga.section.222}}</ref> For example, in [[human]]s, there are 22 pairs of autosomes, but the [[X chromosome|X]] and [[Y chromosome]]s are sex chromosomes. |
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Revision as of 12:53, 26 October 2009
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) |
 |
 |
| 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. | |
See also
References
- ^ Griffiths, Anthony J. F. (1999). An Introduction to genetic analysis. New York: W.H. Freeman. ISBN 071673771X.
{{cite book}}: Cite has empty unknown parameter:|coauthors=(help)
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