Board Thread:Theories and Speculation/@comment-995176-20141108204910/@comment-3568954-20141110164555

Rayzur wrote: Blackchaos27 wrote: @Tori225 Mind you, the whole combining Senju DNA and Uchiha DNA making the Rinnegan is not entirely true. It was more the merging of the chakra of the reincarnations of Asura and Indra.

But even so. You may be on to something about the whole mutation business. Yup cause if that was true, madara or any uchiha for that matter could gain the rinnegan easily

not just any uchiha but any uchiha or senju. since both can awaken the Rinnegan under proper requirements(indra and asura chakra)