Actually that's not *exactly* true, as far as the "breeding out" issue. It's true that if you breed a pure Indica and a pure Ruderalis (or a Shepard and a Collie) you end up with an offspring that is 50/50. However, if you then breed a 50/50 Indica/Ruderalis with another 50/50 Indica/Ruderalis it is possible that the offspring will turn out to be genetically 100% Indica OR Ruderalis. Since each parent only submits one of a pair of chromosomes it's possible that each parent will submit ONLY the Indica genetic coding or ONLY the Ruderalis and the result will be a genetically pure specimen. This is, of course, highly unlikely, but it's possible. More importantly though, given enough selective breeding and diligence it is at least theoretically *possible* to breed out the auto flowering trait, it'd probably be a major pain in the ass though. Obviously, the more generations that go by the less likely this becomes.