Lara Alpan, a Monsanto tour guide, shows how a plant grows in petri dishes in the Monsanto research facility in Chesterfield, Missouri, July 28, 2014. Monsanto says their technology-driven plant breeding process is focused on improving the overall genetics of a crop, using parents with characteristics such as disease tolerance, size or baking qualities. Picture taken July 28, 2014. 10 of 25 Monsanto Stand Alone Picture Package. REUTERS/Tom Gannam (UNITED STATES - Tags: ENVIRONMENT FOOD SCIENCE TECHNOLOGY AGRICULTURE)