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In Science this week, a Japanese research team reports that multiple copies of genes coding for ribosomal RNA helps protect the yeast genome following DNA damage. By comparing four Saccharomyces cerevisiae strains with 20 to 110 copies of rDNA genes, the researchers found that low-copy strains were more sensitive to a DNA damaging chemical or ultraviolet light than high-copy strains.

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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.