It has also been found that there are more carriers of the gene in areas where toxoplasma is more common. Scientists studying the effects of Rh-Negative blood have found that individuals carrying the gene for Rh-Negative blood are more resistant to certain parasites such as toxoplasma, which can threaten unborn children. Sickle-cell disease is inherited in the autosomal recessive pattern. Although sickle-cell anemia is harmful, even deadly, carrying the gene gives a selective advantage and therefore it is much more common than would be expected. The reason is that just carrying the gene for sickle cell anemia gives the person carrying it immunity to Malaria. A large percentage of the population in west Africa where malaria is common consists of carriers of the gene for sickle-cell anemia, although they don’t have the disease themselves.
One possibility is that the gene for Rh-Negative blood has some sort of selective advantage that outweighed the negative consequences of having Rh-Negative blood.Ī well-known example of this phenomenon would be the case of sickle cell anemia and malaria. This unusual trait can, however, also be explained in terms of relatively mundane human genetics and natural selection. The Role of Genetics in Rh-Negative Blood Some people who are not satisfied with the idea that those with RH- blood are another form of humanity have suggested that the trait originates from extraterrestrials either interbreeding with humans or creating humans through genetic engineering. Followers of this idea believe that this race was blonde-haired and blue-eyed and included most major spiritual teachers in history, including Jesus.Īn artistic representation of Hyperborean women. One blogger has gone as far as to say that those with Rh-Negative blood are descendants of the Hyperborean race, which they believe to be the original human race. This has led to speculation that Rh-Negative blood is related to Cro-Magnon ancestry going back to the upper Paleolithic period in Europe.Īmong the more exotic theories is the idea that the Rh-Negative gene represents a separate branch of humanity that intermarried with the branch that came out of Africa. The Basques also speak a non-Indo-European language and have genetic markers that pre-date the rise of agriculture. The Basques have the highest incidence of the gene out of any population in the world. One population which contains an unusually high frequency of the gene for the Rh-Negative blood type are the Basques from northeastern Spain. (ec-jpr/ CC BY NC ND 2.0 ) Rh-Negative Blood Lineages Scientists Believe they Have Found the Origins of the Unique Basque Cultureīlood type testing.A world map of Neanderthal and Denisovan ancestry in modern humans.The Shroud of Turin: Controversial Cloth Defies Explanation as Study Shows it Has DNA From Around the World.Others suggest that lineages with the gene for Rh-Negative blood are merely special in some way and were not meant to be mixed with lineages which are predominantly Rh-Positive. To some people, this looks like the mother’s body is rejecting the baby - which has led them to suggest that perhaps the reason for the rejection is incompatibility based on the mother and child being of different species.
When a woman who is Rh-Negative is pregnant with a child that is Rh-Positive, the mother’s immune system creates protective anti-bodies to the Rh-Positive blood, and her blood essentially becomes toxic to the child. What is unusual about Rh-Negative blood is that the gene for it is surprisingly common despite being potentially harmful. This explanation seems to be the one most consistent with available evidence and the one that is most able to withstand Occam’s Razor. The majority of scientists who have studied the blood type have concluded that it is most likely just a random mutation. Theories range from supernatural ones such as being of divine descent or membership in a divinely chosen people-group, to more scientific or pseudoscientific explanations such as interbreeding with extraterrestrials. This has led some to suggest that Rh-Negative blood must be of a non-human origin.
Health problems may occur for the unborn child of a mother with Rh-Negative blood when the baby is Rh-Positive. There are also instances, however, where people are Rh-Negative. Most people who have the Rh blood type are Rh-positive.
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