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  • 标题:Speciation and Bursts of Evolution
  • 其他标题:Speciation and Bursts of Evolution
  • 本地全文:下载
  • 作者:Chris Venditti ; Mark Pagel
  • 期刊名称:Evolution: Education and Outreach
  • 印刷版ISSN:1936-6434
  • 出版年度:2008
  • 卷号:1
  • 期号:3
  • 页码:274-280
  • DOI:10.1007/s12052-008-0049-4
  • 出版社:BioMed Central
  • 摘要:A longstanding debate in evolutionary biology concerns whether species diverge gradually through time or by rapid punctuational bursts at the time of speciation. The theory of punctuated equilibrium states that evolutionary change is characterised by short periods of rapid evolution followed by longer periods of stasis in which no change occurs. Despite years of work seeking evidence for punctuational change in the fossil record, the theory remains contentious. Further there is little consensus as to the size of the contribution of punctuational changes to overall evolutionary divergence. Here we review recent developments which show that punctuational evolution is common and widespread in gene sequence data.
  • 关键词:Speciation;Evolution;Phylogeny;Punctuational evolution;Charles Darwin
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