Collinear gene order

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. Results can be regenerated at: http://tinyurl.com/noul6b

Syntenic regions, or genomic regions derived from a common ancestral genomic region, are inferred by identifying a collinear series of putatively homologous genes among two or more genomic regions. The inference is that the collinear order is the results of common ancestry rather than due to random chance.