Board Thread:Naruto Discussions/@comment-24120130-20140607191120/@comment-28861328-20140701174209

Elveonora wrote: "that's right, three" And you talk about snarky remarks. Also I somehow don't get what you are getting at with the part about equal/unequal split, try to rephrase that.

Kaguya has two different sets of eyes in her body, which possess the abilities of three (Sharingan, Byakugan, and Rinnegan), which means, if your friend who is "speaking the truth" is correct, and Kishi is following genetics, that means she has the alleles for all three dojutsu. Even so, it is highly improbable, nigh impossible, that her sons would be evenly split, with one possessing the Byakugan, and the other possessing the Sharingan/Rinnegan (Hagoromo had to have the Sharingan's power at the very least, because Indra awakened the Sharingan itself. See where your theory falls apart?). If he was following those laws properly, it'd be far more likely that both Hagoromo and Hamura would've either both been born with the Byakugan, or both with the Sharingan/Rinnegan (take your pick). Plot decided that choice, not genetics.

I'll also point out that Kishi has stated in an interview that if an Uchiha and Hyuga were to breed, the resulting child would have a Sharingan in one eye, and a Byakugan in another. So why didn't Kaguya's children? Furthermore, and more to the point, that is also not how genetics work.

Long story short, he isn't telling you the truth.