(( you know….. I’m all for discussions and dissections of Naruto with relation to science and biology, but at the end of the day I have realized it’s fictional and science works how kishimoto says it works. You wouldn’t question science or magic in a medieval magic setting. The whole point is it’s fake, it’s not gonna make real world sense. It makes sense within the setting because he says so and that’s it, it isn’t deeper than that. ))