By Andrea Anderson

NEW YORK (GenomeWeb News) – An international research team led by investigators at the University of Oslo's Natural History Museum has sequenced the mitochondrial genome of an ancient polar bear, finding new clues about polar bears' evolutionary history and relationship to brown bears.

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In Science this week: factors influencing retrotransposon integration sites, and more.

A bioethicist argues for the responsible use of germline gene editing.

Some breweries are using DNA-based testing to determine whether unwanted bacteria are affecting their beers, The Verge reports.

Standardized N-of-1 trials will be needed to test out personalized medicines, writes Nicholas Schork from the J. Craig Venter Institute at Nature.