Actually, chimpanzees have either type O or type A. Gorillas, on the
other hand, have type O and type B. However, no gorillas are type A and
no chimpanzees are type B. All apes have the ABO blood groups.
The Rh factor goes back to monkeys. Basques tend to be Rh
negative. Outside of western Europe, almost everyone is Rh positive.
The reason it is called Rh is that it is the Rhesus Factor, first
discovered in the Rhesus Monkey.
I have read nonsense about type O being the type of paleolithic
man, but this is not coming from physical anthropologists or
geneticists. It is often connected with theories of genetic experiments
by extraterrestrials. Supposedly, they introduced types A and B.
For some reason, type O confers partial immunity to syphilis. All
American Indians (except Na-Denes) are type O. Some believe they have
always been type O, but there is also a theory that a syphilis epidemic
wiped out all the other types. Some blood types are more likely to get
stomach cancer and one type is associated with being able to digest
milk. Type B is most common in Asia. There are actually two type As,
A1 and A2.
Blood type can be determined from other parts of the body besides
blood. Some red-haired mummies from ancient Peru were types A and B.
Some believe this confirms Thor Heyerdahl's theory of redhaired visitors
from across the Atlantic.
Also, both Peruvian Indians and Polynesians call the sweet potato
KUMARA. The Establishment academics insist that this is a coincidence.
Even though experiments have shown that sweet potatoes couldn't have
drifted to Polynesia without human help, Establishment academics are
adamant that no one from South America ever went by boat to any part of
Polynesia.
When Thor Heyerdahl said an Egyptian raft could have crossed the
Atlantic, Establishment academics told him he was crazy. Then he built
one and crossed the Atlantic, but they still call him crazy and say the
ancients couldn't have done it.
http://www.delphi.com/physanthro