This Week in Nature

In Nature this week, a team led by Colorado State University researchers published an evolutionary study of guppies, providing details about how organisms adapt to environmental change. The researchers transplanted wild Trinidadian guppy from a stream with predatory pike fish into two predator-free streams, then compared gene expression patterns in the brains of the original and transplanted populations after several generations.

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In Genome Research this week: inversion variants mapped in human, non-human primate genomes; transcriptome profiling of maize, sorghum; and more.

US News & World Report writes that genetic testing of lung tumors can help identify treatments for patients.

A team of researchers plans to sample Loch Ness for environmental DNA, according to Newsweek.

The New York Times writes about the appearance of mosaicism in healthy people.