Jazirhaneef's comment is spot-on. He gives some good news, and speculates about possible bad news. Quote:
"But the problem is, at this point, we are not sure about the real problems associated with genetic manipulation and GMO's."
Here's one possible problem that was nipped in the bud. Genetic engineers were interested in boosting the protein QUALITY of legumes -- like peas, beans, and lentils -- which are a bit low in essential sulfur containing amino acids (SCAAs), like methionine.
Their tentative solution: insert DNA from Brazil Nuts into legume seeds. Brazil Nut DNA codes for proteins that have extra SCAAs.
However there was one small fly in the ointment: Some highly sensitive people go into fatal anaphylactic shock when they eat minute quantities of any type of nut. In this respect, nut allergies are comparable to bee stings.
Some quick thinking on the part of scientists in the Genetically Engineered Organism biz narrowly averted a few high-profile tragedies. In general, goobermint regulators and Congress critters are way, way behind on science and technology.
Sometimes they overlook real risks. At other times, they pursue draconian solutions to problems that do not exist. I even wrote a hub about one such non-problem: Gorebull Warming.