Now if I understand correctly, the Emperor has had biological children, right? The Sensei. What about the Primarchs? I mean, they weren't neutered by any psycho treatments or anything like the Marines, and they lived their lives on planets far away from Terra, by the rules and traditions that they had before the Emperor came there. So could it be possible for them to have concieved children during the time before they were discovered by Big Daddy E?