Jejudo, South Korea
What do you mean by 'natural man'?
Without a context, a society, a something that influences when and how DNA does its thing, the idea of a man doesn't make much sense.
I would argue that "man" is a social animal a la Clifford Geertz.
I suppose you could argue that 'man' is defined by DNA but I don't see how your culturally loaded terms follow from that. Without a culture, an environment, 'man' is a gene reproducing machine, nothing more, nothing less (of course, you need two for that and that gets us back to culture, doesn't it?).
Still, I understand the French influence here and wonder if you mean man in hunter/gatherer societies. For an interesting take on that, give "Guns, Germs, and Steel" a shot.