Board Thread:Theories and Speculation/@comment-27082825-20150116155842/@comment-26023629-20150122235226

@Hawkeye- Ok, that clears things up. Well, as I said above, it seems unlikely that such a thing could be created by attempting to refine one gene into a new form, as breeding for one specific trait (lava release) would just enhance that trait, i.e. better lava release, not create a new one. In animal breeding, you breed for a trait by finding the two individuals strongest in that trait and breeding them. That usually doesn't create some entirely new trait, it just accentuates the ones that those individuals shared. The reason I suggest the involvement of multiple advanced natures in these genetic programs is because otherwise there would be no gene for the third element involved. There would have to be some hint as to the possibility of a dust release before it could be specifically bred for in such a small population sample, and that can't be possible with advanced natures- either a basic nature is part of the advanced nature, and represents an exactly even amount of the total chakra involved as the other basic natures being used, or that basic nature is not part of the advanced nature at all.

I agree that they wouldn't share magnet release (or scorch release)- I'm leaning more towards the idea that the Land of Earth just abducted kekkei genkai users from other nations and forced their participation in their projects. My suggestion of arranged marriage in that first part was a little silly, it was like 12:00 for me when I wrote that, but it's just one of the possible ways that multiple advanced nature kekkei genkai could be involved.