Rh
It's not that simple …Rh isn't what you think. Do some simple research. Human Rh is not the same as Rhesus Rh factor Even wikki goes into detail. Rh is only one factor in blood grouping.
What is RH factor : "The Rh blood group system is one of 36 known human blood group systems. It is the second most important blood group system, after the ABO blood group system. The Rh blood group system consists of 49 defined blood group antigens,[1] among which the five antigens D, C, c, E, and e are the most important. There is no d antigen. Rh(D) status of an individual is normally described with a positive or negative suffix after the ABO type (e.g., someone who is A Positive has the A antigen and the Rh(D) antigen, whereas someone who is A Negative lacks the Rh(D) antigen). The terms Rh factor, Rh positive, and Rh negative refer to the Rh(D) antigen only.
The term "Rh" was originally an abbreviation of "Rhesus factor." It was discovered in 1937 by Karl Landsteiner and Alexander S. Wiener, who, at the time, believed it to be a similar antigen found in rhesus monkey red blood cells. It was subsequently learned the human factor is not identical to the rhesus monkey factor, but by then, "Rhesus Group" and like terms were already in widespread, worldwide use.
Remember adaptation within a species ( skin tone, eye color,hair texture) etc.) is not the same as evolution of a species. An apple cannot become an orange. Big jump from "Order" to "Species" with 5 other classifications between. That's why we are called the HUMAN RACE. Physical attributes hold less meaning than the attitudes of the individual minds they are attached to . The only thing that needs more development is the knowledge base some humans have about humanity as a whole.