This Week in PNAS

In the PNAS Early Edition this week, researchers at Michigan State University and their colleagues show that Pack-Mutator-like transposable elements "specifically acquire GC-rich fragments and preferentially insert into the 5' end of genes" in Arabidopsis, which they say "may influence the conformation of chromatin, the expression level of genes, as well as the recombination rate." These Pack-Mutator-like transposable elements — or Pack-MULEs — "form independent, GC-rich tr

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Five researchers are to share this year's Albany Medical Center Prize for their work on the CRISPR/Cas9 gene-editing tool, the AP reports.

Stat News reports on how white supremacists cope with surprising genetic ancestry testing results.

In Genome Research this week: sex-biased gene expression evolution in malaria mosquitos, method to find ancient selective sweeps, and more.

Iceland has nearly eliminated Down syndrome from its population, CBS News reports.