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In early online, scientists have found that transposases play a role in one large eukaryotic genome. Studying the protozoan Oxytricha trifallax, which gets rid of 95 percent of its germline genome during development, they found that transposase genes play a key role in this process. "Transposase gene expression occurs during germline-soma differentiation and ... silencing of transposase by RNAi leads to abnormal DNA rearrangement in the offspring," they say in the abstract.

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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.