Arctic Granny (right), a GMO variety created by Okanagan Specialty Fruits, got the gren light from federal regulators Friday. The apple doesn't turn brown like a conventional Granny Smith apple (left). Okanagan Specialty Fruits hide caption

itoggle caption Okanagan Specialty Fruits

Supporters of efforts to label GMOs in foods turn out at a rally in Denverin 2013. A ballot measure that would such labels failed to pass by a wide margin Tuesday. Luke Runyon/KUNC/Harvest Public Media hide caption

itoggle caption Luke Runyon/KUNC/Harvest Public Media

Labels on bags of snack foods indicate they are non-GMO food products. This fall, Colorado and Oregon will be the latest states to put GMO labeling on the ballot. Robyn Beck /AFP/Getty Images hide caption

itoggle caption Robyn Beck /AFP/Getty Images

Customers shop for produce at the Hunger Mountain Co-op in Montpelier, Vt., in 2013. Toby Talbot/AP hide caption

itoggle caption Toby Talbot/AP

A customer shops for produce at the Hunger Mountain Co-op in April 2013 in Montpelier, Vt. More than a dozen food cooperatives supported the bill that would require the labeling of genetically modified foods. Toby Talbot/AP hide caption

itoggle caption Toby Talbot/AP