Corn domestication took some unexpected twists and turns

Farmers in Mexico and South American tamed maize over thousands of years, a DNA study finds

South American maize varieties

COMPLEX MAIZE  Modern corn plants, such as these South American maize varieties, were domesticated over a surprisingly long period across a broad geographic area after a partly domesticated form originated in Mexico around 9,000 years ago, a new genetic analysis concludes.

Fabio de Oliveira Freitas

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