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In a paper published online in advance in Science this week, investigators at Japan's National Institutes of Natural Sciences show that, in Drosophila, Sex lethal — abbreviated Sxl — acts autonomously in primordial germ cells — or PGCs — to induce female development.

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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.

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

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