Alva Review-Courier -

WASHINGTON (AP) — Gene editing is getting fresh attention thanks to a successful lab experiment with human embryos. But for all the angst over possibly altering reproduction years from now, this technology already is used by scientists every day in fields ranging from agriculture to drug development.

New gene editing tools let scientists alter the DNA of living cells — from plants, animals, even humans — more precisely than ever before. Think of it as a biological cut-and-paste program. A look at the science.

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WHAT IS GENE EDITING

While scientists have long been able to find defective gen...