This Week in PLOS

In PLOS One, researchers report on a genetic analysis of a 33,000-year-old dog skull found in a cave in Siberia's Altai Mountains. A team from the US, Russia, Finland, and Spain performed targeted mitochondrial DNA sequencing on jaw bone and tooth samples from the skull, showing that these samples matched one another and clustered genetically with domestic dogs.

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Technology Review reports that researchers in the US have used CRISPR to modify a number of human embryos.

By introducing genes from butterfly peas and Canterbury bells, researchers in Japan have developed a blue chrysanthemum, according to NPR.

Plant researchers plan to sequence some 10,000 samples that represent the major plant clades, ScienceInsider reports.

In Nature this week: a Danish reference genome, and more.