In Japan, blood types are linked with personality. Somebody with Type O blood is supposed to have a completely different personality than somebody with Type A blood. In addition,15% of humans have RH-negative blood. If mankind evolved from the same African ancestor their blood would be compatible, but its not. Where did the Rh negatives come from? Robert Sepehr is an author, producer and anthropologist specializing in linguistics, archeology, and paleobiology (archeogenetics).