While I do agree that genetics can play a small roll in things, I really wonder to what degree? I certainly agree that bad genetics can factor in, like it does with humans. Humans that reproduce early or late in life tend to pass on more bad things than someone in their prime. I really don't know what age that kicks in with bass. But, in my opinion, a 11 pound bass in a lake full of two pound bass probably isn't much more genetically gifted than the two pound bass. It probably grew at the same rate as the rest of the females, but tended to have different habits than typical bass and simply made it through more years. Maybe it was strictly a night feeder or only fed in deep deep water or got lucky a time or two. I do not think that those sort of traits are going to be passed on to their young.
I am not saying that genetics can't play some part in better bass. I'm saying that it isn't going to be enough to make up eight pounds. The absolute best way to get a lot of large bass is environment related. Warmer climate with longer grow seasons and larger, higher protein diet (like trout).