Punctuated evolution caused by selection of rare beneficial mutations
Punctuated evolution caused by selection of rare beneficial mutations
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DOI：
10.1126/science.272.5269.1802
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发表时间：
1996-06-21
期刊：
影响因子：
56.9
通讯作者：
Lenski, RE
中科院分区：
文献类型：
--
作者：
Elena, SF;Cooper, VS;Lenski, RE
二十多年来，关于大多数形态进化发生在相对较短的快速变化期间的假设一直存在激烈的争论，这种快速变化打断了更长的停滞期。在一个在恒定环境中进化了3000代的大肠杆菌种群中，呈现了一个清晰而明确的间断进化的案例，标点符号是由自然选择引起的，因为罕见的、有益的突变连续地席卷了整个种群，这个实验表明，种群遗传学中最基本的过程可以引起间断的进化动态。
For more than two decades there has been intense debate over the hypothesis that most morphological evolution occurs during relatively brief episodes of rapid change that punctuate much longer periods of stasis, A clear and unambiguous case of punctuated evolution is presented for cell size in a population of Escherichia coli evolving for 3000 generations in a constant environment, The punctuation is caused by natural selection as rare, beneficial mutations sweep successively through the population, This experiment shows that the most elementary processes in population genetics can give rise to punctuated evolutionary dynamics.