Board Thread:Naruto Discussions/@comment-32617252-20170909181532/@comment-35622277-20170913061207

No, it actually doesn't. Being his reincarnate doesn't mean you genetically resemble the one before you. Only Asura's chakra is re-incarnating into a new body, and yet even their signatures aren't even close.

The only one who could tell was Kaguya, with her Byakugan.