Agriculture giant Monsanto may be best known for genetic modification-like creating corn that resists the effects of Monsanto's weed killer Roundup. But when it comes to fruits and vegetables you buy in the store, genetic modification is off the menu. Monsanto thinks no one will buy Frankenfoods, so the company is tweaking its efforts-continuing to map the genetic basis of a plant's desirable traits but using that data to breed new custom-designed strains the way agronomists have for millennia. Here's how it works-and how the results differ from GMO crops. Thanks to this cross between high and low tech, a new era of super-produce may be upon us. -Victoria Tang