Board Thread:Debates/@comment-24847491-20141107064156/@comment-1512913-20141107102044

The point I think he is trying to make is that it doesn't function as a proper kekkei genkai. Kaguya's Rinne Sharingan got split into Rinnegan and Sharingan I suppose and maybe some of it went into Hamura too. Hagoromo's doujutsu got split into Sharingan and Ashura's chakra and so on. In other words, it got reduced each generation. While each Uchiha generation didn't get 1/2 of Sharingan or 1/3 even, they just either had it or not. Not to mention the doujutsu can be obtained by merger of chakras, nothing genetic.