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This Week in Nature: Apr 19, 2007

In a news item, Nature reports on a PNAS paper that found more chimpanzee genes have been under positive selection than genes in humans.

An essay from John Doyle and Marie Csete looks at engineered and biological systems. The authors contend that not only should engineers learn from biologists, but biologists should learn from engineers as well.

Phil Zamore writes a news and views piece commenting on papers in Cell and Science on how organisms manage to produce and amplify small RNAs designed to silence transposons.

Two papers in this issue report on a key regulatory mechanism involved in cell division. One paper, published by a team of authors including Greg Hannon, Marc Kirschner, and Peter Sorger, describes anaphase initiation. The other, from Reddy et al. at Harvard Medical School, demonstrates the mechanism of checkpoint inactivation.


The Scan

CDC Calls Delta "Variant of Concern"

CNN reports the US Centers for Disease Control and Prevention now considers the Delta variant of SARS-CoV-2 to be a "variant of concern."

From FDA to Venture Capital

Former FDA Commissioner Stephen Hahn is taking a position at a venture capital firm, leading some ethicists to raise eyebrows, according to the Washington Post.

Consent Questions

Nature News writes that there are questions whether informed consent was obtained for some submissions to a database of Y-chromosome profiles.

Cell Studies on Multimodal Single-Cell Analysis, Coronaviruses in Bats, Urban Microbiomes

In Cell this week: approach to analyze multimodal single-cell genomic data, analysis of bat coronaviruses, and more.