imported>Daniel Mietchen |
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| == Summary == | | == Summary == |
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| |description = Two views on the role of [[gene duplication]] in [[evolution]]. (A) Many [[20th century]] biologists viewed [[gene]]s as [[trait]]s of [[species (biology)|species]], exquisitely tuned to current utility. This resulted in the assumption that each species should, for the most part, possess different genes. Gene duplication was recognized, but was implicitly assumed to have occurred recently. (B) Many biologists now assume that most genes have their origins in gene duplication events, which happen throughout evolutionary history. As a result, many genes form families that have persisted for hundreds of millions of years.
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| |author = [[CZ:Ref:Rose 2007 The new biology: beyond the Modern Synthesis|Rose & Oakley, 2007]]
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| |copyright = [[CZ:Ref:Rose 2007 The new biology: beyond the Modern Synthesis|Rose & Oakley, 2007]]
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| |source = Fig. 1 from {{CZ:Ref:Rose 2007 The new biology: beyond the Modern Synthesis}}
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| |date-created = 17 October 2007
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| |pub-country = United States
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| |notes =
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| == Licensing/Copyright status ==
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| {{CC|by|2.0}}
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