This Week in PNAS

In the early, online edition of the Proceedings of the National Academy of Sciences, a team from the Czech Republic and Germany describes horizontal gene transfer in plants from different grass families. With targeted PCR screening on 16 barley plants, the researchers found evidence of nuclear ribosomal RNA genes that appeared to originate in plants from a lineage that split from the barley plant family roughly 60 million years ago.

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Though many details have yet to be worked out, the draft deal for the UK's withdrawal from the EU is giving researchers some hints for what they can expect, Nature News says.

DNA testing has solved a 100-year-old mystery contained in the skull and teeth samples of a now-extinct monkey that once inhabited Jamaica, Gizmodo reports.

As the UN ponders a ban on gene drives, one malaria researcher says there are less dramatic ways to fight the disease in Africa than unleashing GM mosquitoes on a whole continent.

In Nature this week: an improved reference genome of the Aedes aegypti mosquito, genomes of four species of truffles, and more.