In whippets, a type of racing dog, a single copy of a mutated gene for myostatin helps them be the fastest sprinters on the track, report researchers led by Elaine Ostrander from the National Human Genome Research Institute. But having two copies of this MSTN fast-twitch muscle gene doesn't make them doubly fast.

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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.