Large Punctuational Contribution of Speciation to Evolutionary Divergence at the Molecular Level Export

@article{citeulike:912881, abstract = {A long-standing debate in evolutionary biology concerns whether species diverge gradually through time or by punctuational episodes at the time of speciation. We found that approximately 22\% of substitutional changes at the DNA level can be attributed to punctuational evolution, and the remainder accumulates from background gradual divergence. Punctuational effects occur at more than twice the rate in plants and fungi than in animals, but the proportion of total divergence attributable to punctuational change does not vary among these groups. Punctuational changes cause departures from a clock-like tempo of evolution, suggesting that they should be accounted for in deriving dates from phylogenies. Punctuational episodes of evolution may play a larger role in promoting evolutionary divergence than has previously been appreciated. 10.1126/science.1129647}, address = {School of Biological Sciences, University of Reading, Whiteknights, Reading RG6 6AJ, UK. m.pagel@rdg.ac.uk}, author = {Pagel, Mark and Venditti, Chris and Meade, Andrew}, citeulike-article-id = {912881}, citeulike-linkout-0 = {http://dx.doi.org/10.1126/science.1129647}, citeulike-linkout-1 = {http://www.sciencemag.org/cgi/content/abstract/314/5796/119}, citeulike-linkout-2 = {http://view.ncbi.nlm.nih.gov/pubmed/17023657}, citeulike-linkout-3 = {http://www.hubmed.org/display.cgi?uids=17023657}, day = {6}, doi = {10.1126/science.1129647}, issn = {1095-9203}, journal = {Science}, keywords = {bursts, evolution, species}, month = {October}, number = {5796}, pages = {119--121}, posted-at = {2009-07-10 10:55:00}, priority = {2}, title = {Large Punctuational Contribution of Speciation to Evolutionary Divergence at the Molecular Level}, url = {http://dx.doi.org/10.1126/science.1129647}, volume = {314}, year = {2006} }

TY - JOUR ID - citeulike:912881 L3 - citeulike-article-id:912881 N2 - A long-standing debate in evolutionary biology concerns whether species diverge gradually through time or by punctuational episodes at the time of speciation. We found that approximately 22% of substitutional changes at the DNA level can be attributed to punctuational evolution, and the remainder accumulates from background gradual divergence. Punctuational effects occur at more than twice the rate in plants and fungi than in animals, but the proportion of total divergence attributable to punctuational change does not vary among these groups. Punctuational changes cause departures from a clock-like tempo of evolution, suggesting that they should be accounted for in deriving dates from phylogenies. Punctuational episodes of evolution may play a larger role in promoting evolutionary divergence than has previously been appreciated. 10.1126/science.1129647 IS - 5796 JF - Science SN - 1095-9203 AD - School of Biological Sciences, University of Reading, Whiteknights, Reading RG6 6AJ, UK. m.pagel@rdg.ac.uk EP - 121 TI - Large Punctuational Contribution of Speciation to Evolutionary Divergence at the Molecular Level VL - 314 SP - 119 KW - bursts KW - evolution KW - species AU - Pagel, Mark AU - Venditti, Chris AU - Meade, Andrew PY - 2006/10/06/ UR - http://dx.doi.org/10.1126/science.1129647 ER -