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原文連結
論文資訊
- 類型：已發表論文
- 日期：2018-04-19
摘要
Background: Recombination is widespread across the tree of life, because it helps purge deleterious 突變s and creates novel adaptive traits. In prokaryotes, it often takes the form of horizontal gene transfer from a donor to a recipient bacterium. While such transfer is widespread in natural communities, its immediate fitness benefits are usually unknown. We asked whether any such benefits depend on the environment, and on the identity of donor and recipient strains. To this end, we adapted Escherichia coli to two novel carbon sources over several hundred generations of laboratory 演化, exposing evolving 族群s to various DNA donors. Results: At the end of these experiments, we measured fitness and sequenced the 基因組s of 65 clones from 34 replicate 族群s to study the 遺傳 changes associated with adapt
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