Synteny: Difference between revisions
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[[Image:Gevo-synteny.png|thumb|600px|right|Syntenic comparison of two regions from the genome of Arabidopsis thaliana. This genome underwent a whole genome duplication event which created a copy of every genomic region. Over evolutionary time, many of the duplicated genes were lost by a process known as [[fractionation]]. However, many duplicated genes have been retained in duplicate and their collinear arrangement in the genome is evidence for synteny. ]] | [[Image:Gevo-synteny.png|thumb|600px|right|Syntenic comparison of two regions from the genome of Arabidopsis thaliana using [[GEvo]]. This genome underwent a whole genome duplication event which created a copy of every genomic region. Over evolutionary time, many of the duplicated genes were lost by a process known as [[fractionation]]. However, many duplicated genes have been retained in duplicate and their collinear arrangement in the genome is evidence for synteny. ]] | ||
Synteny is a valid deduction that two or more genomic regions are derived from a single ancestral genomic region. Syntenic region can be from different organisms and are derived from speciation, or from the same genome and are derived from genome duplication events (such as [[polyploidy]]). Syntney is detected through evidence based on collinearity of genomic content such as genes. If two regions have obvious collinear features, they are syntenous. However, many noncollinear regions may be logically rearranged (e.g. through inversious) into a common ancestor, and thus be syntenous. | Synteny is a valid deduction that two or more genomic regions are derived from a single ancestral genomic region. Syntenic region can be from different organisms and are derived from speciation, or from the same genome and are derived from genome duplication events (such as [[polyploidy]]). Syntney is detected through evidence based on collinearity of genomic content such as genes. If two regions have obvious collinear features, they are syntenous. However, many noncollinear regions may be logically rearranged (e.g. through inversious) into a common ancestor, and thus be syntenous. | ||
Revision as of 01:30, 9 February 2010
Synteny is a valid deduction that two or more genomic regions are derived from a single ancestral genomic region. Syntenic region can be from different organisms and are derived from speciation, or from the same genome and are derived from genome duplication events (such as polyploidy). Syntney is detected through evidence based on collinearity of genomic content such as genes. If two regions have obvious collinear features, they are syntenous. However, many noncollinear regions may be logically rearranged (e.g. through inversious) into a common ancestor, and thus be syntenous.