This Week in Cell

Chromatin-associated proteins and histone modifications can be maintained through many rounds of transcription, but it wasn't known whether these complexes stay bound. Scientists at Harvard examined the PRC1-class Polycomb group protein complexes in an in vitro transcription experiment and found that Polycomb complexes remain bound to replicated templates.

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The UK's Nuffield Council on Bioethics says genetically modifying human embryos could be morally permissible, according to the Guardian.

A new Nature Biotechnology paper reports that CRISPR-Cas9 gene editing can lead to large deletions or complex rearrangements that could be pathogenic.

The Wall Street Journal likens a prototype developed by Synthetic Genomics to a "biological fax machine."

In PNAS this week: strategy for reactivating Rett syndrome-linked MECP2, small molecules able to suppress Staphylococcus aureus virulence, and more.