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        Just How Easy Is It to Edit DNA?

        Several years ago, a new DNA-editing technique called CRISPR-Cas9 swept through biotech labs around the world. The technology, borrowed from a bacterial defense system, uses a pair of molecular scissors to snip DNA within a host cell at predetermined spots. A new gene can then be subbed into the vacant spot. It’s incredibly powerful technology, with huge potential—and sometimes scary consequences.

        www.sciencefriday.com

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