Board Thread:Theories and Speculation/@comment-5012682-20150620162706/@comment-2140588-20150620184513

Legendary Super Saiya-Jin 4 wrote: @Omo and Mina Are you saying the Uchiha just randomly chose to specialize in fire release, rather than inheriting it naturally? Yes. Whoever thought of their rite-of-passage technique made sure that Fire Release would be the preferred type of the clan.

Legendary Super Saiya-Jin 4 wrote: If that was true, one of their kekkei genkai, the Amaterasu and Blaze Release via their MS, wouldn't naturally have fire release properties to it. a) Blaze Release isn't a Kekkei Genkai b) Because when learning Fire Release at a young age, you begin to improve in the skill. It's only natural to create techniques of that nature, given that they "specialise" in it.

Legendary Super Saiya-Jin 4 wrote: So it must be a genetic thing, as depending on your clan and environment, your chakra signatures are different as proved by Tobirama and Mu. Still not a genetic thing. This is something affected by the environment. How come living in a certain land changes your genetics?