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The evolutionary significance of ancient genome duplications

Authors
  • Van de Peer, Yves
  • Maere, Steven
  • Meyer, Axel
Publication Date
Jan 01, 2009
Identifiers
DOI: 10.1038/nrg2600
OAI: oai:archive.ugent.be:771452
Source
Ghent University Institutional Archive
Keywords
Language
English
License
Unknown
External links

Abstract

Many organisms are currently polyploid, or have a polyploid ancestry and now have secondarily 'diploidized' genomes. This finding is surprising because retained whole-genome duplications (WGDs) are exceedingly rare, suggesting that polyploidy is usually an evolutionary dead end. We argue that ancient genome doublings could probably have survived only under very specific conditions, but that, whenever established, they might have had a pronounced impact on species diversification, and led to an increase in biological complexity and the origin of evolutionary novelties.

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