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MBE Advance Access originally published online on May 25, 2005
Molecular Biology and Evolution 2005 22(9):1865-1868; doi:10.1093/molbev/msi176
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© The Author 2005. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution. All rights reserved. For permissions, please e-mail: journals.permissions@oupjournals.org

Research Article

Ectopic Gene Conversions Increase the G + C Content of Duplicated Yeast and Arabidopsis Genes

David Benovoy, Robert T. Morris, Antoine Morin and Guy Drouin

Département de biologie, Université d'Ottawa, Ottawa, Ontario, Canada

E-mail: gdrouin{at}science.uottawa.ca.

Allelic recombination has previously been shown to increase the GC-content of the sequences of a wide variety of eukaryotic species. Ectopic recombination between clustered tandemly repeated genes has also been shown to increase their GC-content. Here we show that gene conversions between the dispersed genes found in the duplicated regions of the yeast and Arabidopsis genomes also increase their GC-content when these genes are more than 88% similar.

Key Words: ectopic • gene conversion • GC-content • recombination • Saccharomyces cerevisiae • Arabidopsis thaliana


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