Data from: A shift from magnitude to sign epistasis during adaptive evolution of a bacterial social trait

Peter C. Zee, Helena Mendes-Soares, Yuen-Tsu Nicco Yu, Susanne A. Kraemer, Heike Keller, Stephan Ossowski, Korbinian Schneeberger & Gregory J. Velicer
While the importance of epistasis in evolution has long been recognized, remarkably little is known about the processes by which epistatic interactions evolve in real time in specific biological systems. Here, we have characterized how the epistatic fitness relationship between a social gene and an adapting genome changes radically over a short evolutionary time frame in the social bacterium Myxococcus xanthus. We show that a highly beneficial effect of this social gene in the ancestral...
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