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Using genome editing, a University of California, Berkeley-led research team maps the evolution of the monarch butterfly's resistance to cardiac glycoside toxins — a trait that also evolved in insects from numerous other orders. Resistance to these toxins is believed to result from evolved amino acid substitutions in the alpha-subunit (ATP-alpha) of the sodium pump, the physiological target of cardiac glycosides.

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The US Department of Justice has proposed a rule change to enable DNA to be collected from migrants, the Associated Press reports.

Bernard Fisher, a surgeon who changed how breast cancer is treated, has died at 101, the New York Times reports.

Washington Post columnist writes that she is skeptical about DNA-based diets.

In PNAS this week: recurrent inactivation of DEPDC5 in gastrointestinal stromal tumors, taxonomic reliability of GenBank sequences, and more.