Board Thread:Naruto Discussions/@comment-5054236-20150717003436/@comment-24808887-20150719123635

@Dark Beau Ryan, they both does. Every child revices one of two alleles for every genetic trait - same goes for eye genes. What you implying that Asura got his eyes (wich is not Rinnegan) from Mother without recivieng genes from father - it's not possible. So i repeat Asura got his genes about all his traits from father as well as from mother, same goes for Indra. Wich mean that Hagoromo has normal eyes genes as well, because if didn't Asura would've got some sort of hybrid eyes(between normal and Sharingan)