Maize reveals traces of old breeding project Emma Marris Gene suggests ancient culture selected patterns in its corn. Teosinte grass (left) compared to "reconstructed" primitive maize, created by crossing teosinte with Argentine pop corn. © The Doebley Lab The people of Mesoamerica are largely responsible for the golden corn we grow today, having domesticated tough teosinte grass thousands of years ago and bred it into modern maize. Researchers have now located the gene responsible for some of the traits that the Mesoamericans were selecting. The discovery should help scientists understand how plants develop, and reveals just how strict the ancient...