This Week in Science

In Science this week, an international team led by investigators at the University of Houston report the effects of epistatic interactions among mutations on fitness "for the first five mutations to fix in an experimental population of Escherichia coli." The team says that "epistasis depended on the effects of the combined mutations," such that "the larger the expected benefit, the more negative the epistatic effect." As a result, the team says that in its study, epistasis "tended to produc

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Direct-to-consumer genetic testing companies have offered to test families separated at the southern US border, but that raises ethical issues.

CNBC reports that confirming a positive result from 23andMe's BRCA health report can be expensive.

The New York Times reports on a project to develop a tree DNA database to uncover illegal logging.

In PLOS this week: links between gut microbiome and colorectal cancer mutations, targeted sequencing uncovers genetic susceptibilities to epilepsy in Koreans, and more.