Why do we have different blood types if we're all human and originate from the same source...Adam and Eve? What's more...why do a small percentage of us have a negative RH factor in our blood when most of the population is RH positive? By the way...the RH stands for Rhesus Monkey. So...most folks apparently have the monkey gene and others (the minority) don't. Maybe the RH negative folks are descendents of the Gods while the RH positive folks descend from monkeys.