This Week in Nature

In this week's Nature, an international research team presents an analysis of the genomes of 60 different citrus varieties ranging from the Chinese mandarin to the Chandler pummelo, providing a new evolutionary framework for this genus of fruit plants. The researchers find that today's citrus trees are descended from at least 10 natural citrus species, and propose that citrus diversified during the late Miocene epoch through a rapid southeast Asian radiation that correlates with a marked weakening of the monsoons.

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The UK's Human Fertility and Embryology Authority calls for consumer genetic testing companies to warn customers that testing could uncover family secrets, according to the Guardian.

The New York Times reports that United Nations delegates have been discussing how to govern the genetic resources of the deep sea.

Researchers have transplanted edited cells into mice that appear to combat cocaine addiction, New Scientist reports.

In PNAS this week: analysis of proteolytic enzymes secreted by circulating tumor cells, phylogenetic study of Fv1 evolution, and more.