A genetically modified organism (GMO) or genetically engineered organism (GEO) is an organism whose genetic material has been altered using genetic engineering techniques.
The first commercially grown genetically modified whole food crop was a tomato (called FlavrSavr), which was modified to ripen without softening, by Calgene, later a subsidiary of Monsanto. Calgene took the initiative to obtain FDA approval for its release in 1994 without any special labeling, although legally no such approval was required.
A gmo can be created by adding additional genes to an already existing DNA string. Now there is no assurances that each time that the newly created DNA string is created it is the same . The new gene or genes added could be added in different areas of a current DNA string. The testing of GMOs has been done by the very companies that are trying to sell GMO products. The fox in the hen house comes to mind.
Many of the tests that corporations conduct are not done with proper scientific methods. Now these test results are turned over to the Food and Drug Administration. The FDA doesn't feel the need to run independent tests to verify the results produced by the GMO corporations.
The GMO corporations say that they are not in the policing food business they are in business to make money. We have a whole new technology that is being forced upon the people of the United States without any substantial independent verification. The long term effects to adults and children has never been studied.