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Researchers use the DNA of currently-living Quebecois to help identify their ancestors.

Jesse Kathan, Contributor

A child neurologist talks about the challenges of autism.

Emilie Lorditch, Contributor

Rings of DNA inside bacteria use CRISPR process to attack each other.

Brian Owens, Contributor

Genetic differences between forest lizards and city lizards show evolution can play out the same way again and again.

Nala Rogers, Staff Writer

Early research suggests virus can protect rodents without negative side effects.

Charles Q. Choi, Contributor

Despite high-profile study, the ancestors of humans living today likely evolved in many places at once, say critics.

Nala Rogers, Staff Writer

Oxygen-sensing genes allow cells to adapt when oxygen levels drop.

Brian Owens, Contributor

For the bluehead wrasse, going from female to male involves a dramatic genetic reprogramming in the sexual organs.

Rodrigo Pérez Ortega, Contributor

The bright colors of a variety of citrus fruits, including lemons, limes and other tart fruits fill the foreground of the image. The background includes white lines of the DNA double helix.

Scientists identify two genes behind plant cell pumps that produce sourness -- and variation in flower color.

Charles Q. Choi, Contributor

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