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Silvereye birds explain evolution
Email: Tudor Toma - t.toma@ic.ac.uk News from The Scientist 2002, 3(1):20020530-02
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The 'founder effect' theory — still controversial to many biologists — states that speciation occurs suddenly due to a small influx of colonists founding new populations, resulting in the creation of many new gene combinations and losing many others. But, in 28 May online Proceedings of National Academy of Sciences USA, Sonya Clegg and colleagues from Imperial College, London, show that single colonization events are rarely accompanied by severe founder effects and the formation of new species is a gradual and not a sudden process.
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