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Trends Genet. 2010 Sep;26(9):400-5. doi: 10.1016/j.tig.2010.06.005. Epub 2010 Aug 3.

Causes and evolutionary significance of genetic convergence.

Author information

  • 1Department of Ecology and Evolutionary Biology, Brown University, Providence, RI 02906, USA. Pascal-Antoine_Christin@brown.edu

Abstract

Convergent phenotypes provide extremely valuable systems for studying the genetics of new adaptations. Accumulating studies on this topic have reported surprising cases of convergent evolution at the molecular level, ranging from gene families being recurrently recruited to identical amino acid replacements in distant lineages. Together, these different examples of genetic convergence suggest that molecular evolution is in some cases strongly constrained by a combination of limited genetic material suitable for new functions and a restricted number of substitutions that can confer specific enzymatic properties. We discuss approaches for gaining further insights into the causes of genetic convergence and their potential contribution to our understanding of how the genetic background determines the evolvability of complex organismal traits.

Copyright 2010 Elsevier Ltd. All rights reserved.

PMID:
20685006
[PubMed - indexed for MEDLINE]
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