An article published online at the Nature web site on November 24 (Chou et al., 2014) presents a fascinating study of examples in which bacterial genes have found their way to a number of distinct eukaryotic lineages including ticks and mites, gastropod (e.g.,...
Epistasis refers to the influence of one genomic mutation or variant on the phenotypic effects of another mutation or variant. Based on available evidence and theory, this phenomenon has a major influence on evolutionary trajectories for organisms of all...