in the past 6 thousand years of history, we havent changed not one bit, other than in technology, and knowledge. but still got a pair of lags,arms,eyes,heart
head, nothing has changed.
I think you'll find that some of us have changed colour, in the northern latitudes we need more sunshine for our vitamin D, i think white skin absorbs 10X that of black skin, i'm sure someone will google and correct me...