Actually, that was a good question. I've heard something along the lines of that, testing the plant to get an idea on it's lineage, but I've never looked into it, so I don't know if it's reliable or anything. But, if you like what you grew, just keep it, by cloning, or inbreeding it a few times, to get it stabalized and select the best traits each time. Eventually, you'll have your own amazing strain.