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Never Mind Fingerprints, Here Are Genome-prints

Items that leave a mark as fossils are usually bones or shells, blogs Olivia Judson, but genomes can also leave a trail. The bigger the genome of an organism, she says, the more DNA is packed into the cell, affecting the cell's volume. If the same cell type is compared across species, then the difference in size reflects the difference in genome size, she says. Though genome size says nothing about complexity, it still can provide a bit of information about metabolism and lifestyle of the extinct organism, says Judson.


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.