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genetic engineering

evolution

Genetic Engineering to Clash With Evolution

Gene drives promise to spread a trait across an entire population. But evolutionary forces are going to alter even the best-engineered plans.

Biology

New Letters Added to the Genetic Alphabet

Scientists hope that new genetic letters, created in the lab, will endow DNA with new powers.

Biology

Breakthrough DNA Editor Born of Bacteria

Interest in a powerful DNA editing tool called CRISPR has revealed that bacteria are far more sophisticated than anyone imagined.