Originally Posted by AlphaNoN

It's very doable, but the investment needed to undertake such an operation is mind boggling. Finding, isolating, and extracting the genes that control THC production, then finding a suitable agro-bacteria to carry it into an equally suitable host plant would cost into the hundreds of millions. Only companies (such as monsanto) would be in a position to do such a thing, and they, of course, have no interest in a plant that would screw up the profit margins of their other products, or possibly infect a staple food product with an intoxicating substance.

If you need proof of it's reproductive capabilities just google "RoundUp Ready cross pollination" or a variation of those terms. People are afraid of it because Monsanto owns the patent on the very genetic makeup of their seeds, meaning that crops that have been cross pollinated and grown with "their genes" belong to the monsanto corporation.