Journal
YEAR IN EVOLUTIONARY BIOLOGY
Volume 1256, Issue -, Pages 1-14Publisher
BLACKWELL SCIENCE PUBL
DOI: 10.1111/j.1749-6632.2011.06384.x
Keywords
whole-genome duplication; single-gene duplication; plant; gene expression; divergence; gene retention; evolutionary model
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Funding
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [0817707] Funding Source: National Science Foundation
- Direct For Biological Sciences
- Div Of Molecular and Cellular Bioscience [0821096] Funding Source: National Science Foundation
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With many plant genomes sequenced, it is now clear that one distinguishing feature of angiosperm (flowering plant) genomes is their high frequency of whole-genome duplication. Single-gene duplication is also widespread in angiosperm genomes. Following various mechanisms of gene duplication, genes are often retained or lost in a biased manner, which has suggested recent models for gene family evolution, such as functional buffering and the gene balance hypothesis in addition to now-classical models, including neofunctionalization and subfunctionalization. Evolutionary consequences of gene duplication, often studied through analyzing gene expression divergence, have enhanced understanding of the biological significance of different mechanisms of gene duplication.
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