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Researchers at Harvard and UC San Diego published a paper online in advance in PNAS this week showing that "maps of friendship networks show clustering of genotypes." Using six available genotypes from the National Longitudinal Study of Adolescent Health, the team mapped genetic similarities among more than 3,000 friend pairs and found that, when controlled for population stratification, "one genotype is positively correlated (homophily) and one genotype is negatively correlated (het

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NPR reports that researchers have developed chimeric embryos as part of work toward growing human organs in animals for organ transplants.

According to the Washington Post, the Biden Administration is set to make changes to federal restrictions on fetal tissue research.

In Science this week: approach to isolated trace DNA from archaic humans from sediments, and more.

Texas Monthly looks into the DNA Zoo being collected by Baylor College of Medicine researchers.