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Not So Different After All

"Which species is more diverse, humans or chimps?" asks Michael White at Adaptive Complexity. The answer, he says, is chimps, though both people and chimps are less diverse than fruit flies. He then walks through how genetic diversity is measured and what the genetic differences among human populations are. "Most of the genetic variation among humans has nothing to do with differences in populations," he adds.

The Scan

Could Cost Billions

NBC News reports that the new Alzheimer's disease drug from Biogen could cost Medicare in the US billions of dollars.

Not Quite Sent

The Biden Administration likely won't meet its goal of sending 80 million SARS-CoV-2 vaccine doses abroad by the end of the month, according to the Washington Post.

DTC Regulation Proposals

A new report calls on UK policymakers to review direct-to-consumer genetic testing regulations, the Independent reports.

PNAS Papers on Mosquito MicroRNAs, Acute Kidney Injury, Trichothiodystrophy

In PNAS this week: microRNAs involved in Aedes aegypti reproduction, proximal tubule cell response to kidney injury, and more.