Board Thread:Theories and Speculation/@comment-5012682-20150620162706/@comment-5936871-20150620182025

@Omo and Mina Are you saying the Uchiha just randomly chose to specialize in fire release, rather than inheriting it naturally? 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. That just doesn't make any sense, and people from the Land of Fire tend to naturally have more fire-natured chakra than those not from that land. 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.