Imagine tribes filled out over populated Europe like cells. They raid each other, kill men, take women and now that Y chromosome fills 2 cells.
Push an exponentially increasing 1 tribal diameter of area per generation at the front and it doesn't take many generations for almost replacement.
Imagine tribes filled out over populated Europe like cells. They raid each other, kill men, take women and now that Y chromosome fills 2 cells.
Push an exponentially increasing 1 tribal diameter of area per generation at the front and it doesn't take many generations for almost replacement.