Board Thread:Theories and Speculation/@comment-27082825-20150116155842/@comment-1458758-20150122194646

Kekkei Tota means bloodline selection right? Well I know it's been addressed before, but given that this ability appears exclusive to Iwa, would it not be possible that, as one of the more militant states in the Naruto universe, that this name actually stems from a sort of eugenics program to try and breed in this ability?

If you consider the politics of this world, Kumo has made a point of actively attempting to steal abilities from other countries, failing to take possession of the Byakugan, having a Magnet style user, and in the anime, the Raikage himself went on a mission to steal secrets from some small time hidden village.

Kiri, whilst seemingly putting less focus on this, has a bloodline exclusive to its village, shares two more, both of which used by one person and have successfully stolen another. Not to mention their past attempts at weeding out weakness by forcing Genin to slaughter each other.

It's entirely possible that Iwa took a different approach to this, instead attempting to breed in these abilities which would likely explain how Mu and Onoki have these powers, but no apparent blood relation. Meanwhile Onoki's ancestors (the First Tsuchikage) and his descendants (Kurotsuchi) might not possess these powers if the program did not exist in their times.

This doesn't seem at all unreasonable to me since the entire basis of Kekkei Genkai in the series was inspired by the Koga Ninja Scrolls which addressed such ideas.

It seems likely that Iwa took a Kekkei Genkai like Lava style and attempted to breed ninja with greater powers or to produce a selective mutation in the ability itself, thus resulting in Mu and later Onoki, the two need not have been related by blood, but if they were 'engineered' for lack of a better term, to possess the same potential, Mu could have taught Onoki how to wield that power. Then later, after said program was dissolved or whatever, the thinning of the bloodline could result in a couple of generations down the line, Kurotsuchi simply possessing Lava Style.

Also, before someone jumps down my throat with "That's not how genetics works, once you've mutated a gene it doesn't turn back to what it was" I'd like to point out that we're dealing with a concept where it's the genetic potential to atomize structures vs. producing molten liquid from your body. Expectation should be on a passing familiarity with genetics at best without the expectation of Degree level knowledge on the matter on behalf of the creator, who writes and draws manga for a living, not sequencing gene structures.