NEW YORK (GenomeWeb) – The genetic ancestry of European Americans, Latinos, and African Americans in the United States is more diverse than some might have assumed and regional differences in genetic ancestry reflect historical events, according to a new study by 23andMe and collaborators at Harvard Medical School.

The study, published in the American Journal of Human Genetics today, is based on data from 23andMe customers who described themselves as belonging to one of three groups — about 148,800 European Americans, 8,700 Latinos, and 5,300 African Americans.

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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.