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原文連結
論文資訊
- 類型：已發表論文
- 日期：2017-06-14
摘要
The benefits and detriments of recombination for adaptive 演化 have been studied both theoretically and experimentally, with conflicting predictions and observations. Most pertinent experiments examine recombination's effects in an unchanging environment and do not study its 基因組wide effects. Here, we evolved six replicate 族群s of either highly recombining R+ or lowly recombining R-E.coli strains in a changing environment, by introducing the novel nutrients L-arabinose or indole into the environment. The experiment's ancestral strains are not viable on these nutrients, but 130 generations of adaptive 演化 were sufficient to render them viable. Recombination conferred a more pronounced advantage to 族群s adapting to indole. To study the genomic changes associated with this advantage, we sequenced t
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