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An international team led by investigators at the Salk Institute for Biological Studies in La Jolla, Calif., shows that Imp — IGF-II messenger RNA binding protein — counteracts endogenous small interfering RNAs to stabilize self-renewal factor upd RNA in Drosophila testis. "However, similar to upd, Imp expression decreases in the hub cells of older males, which is due to the targeting of Imp by the heterochronic microRNA let-7," the team writes.

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A 50-year-old cold case was cracked using genetic genealogy, the New York Times reports.

NPR reports that some insect pests are now becoming resistant to Bt crops.

Science reports the US Food and Drug Administration did not consult an outside panel in its approval of remdesivir as a COVID-19 treatment.

In Nature this week: a framework for future human genomic research, PORE-cupine approach to study RNA structure using nanopore sequencing, and more.