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Originally posted by HypnoAsp
Wow, I have not thought about this in years. Around 85% of the human population can trace an element in their blood to the Rhesus monkey. Yup, that is what the RH stands for.100% of the worlds primates fall into this category of RH+ blood. If we all evolved from the same ancestor all our blood should be compatible. The rare RH- females of our species will violently attack the offspring of an RH+ male with antibodies in the womb. This type of fetus death by blood type does not occur in any other known species on earth.
There are really only two ways science can explain RH- blood. If I recall correctly either a gene mutation (less likely as it should not have survived evolution) or cross breeding between two different species which science doesn't really like to talk about. Again, if I recall correctly there is a higher concentration of persons carrying rr RH- and even more carrying r RH- somewhere in Northern Europe. Recently science has started to uncover evidence that Neanderthals did not go extinct as we had been previously taught. The newest evidence is leaning towards crossbreeding with our very own common ancestor. Though I have not researched it, I am guessing that Fred & Barney may have been RH-. Then there is that Alien factor & Bible stuff. Hmmmmm....
P.S. Seemingly an even more recent blood type as a result of evolving a fix for Malaria, The Duffy blood type.....
[edit on 2-11-2008 by HypnoAsp]
This is the answer. RH negatives have Neanderthal genes.
Originally posted by Badge01
reply to post by HypnoAsp
OK, Hypno, you're a bit in error here as regards the -naming- of this factor.
Originally posted by Badge01 The rhesus factor was defined by Karl Landsteiner by cross-reacting rabbit antisera with rhesus or macaque Monkey red cells and this produced an 'anti-Rhesus factor' or antisera. It's actually called 'anti-LW' after him.
Originally posted by Badge01So I don't believe there's evidence or assertion that this factor came from New World monkeys based on this blood typing research by Landsteiner.
Originally posted by Lenna
Good subject,I discovered it while reading about the Basque people.
Found an interesting article about the Rh protein's biological role.
"Rh proteins act as gas channels that help speed the transfer of carbon dioxide (CO2) in and out of red blood cells. CO2 can also pass through the cell membrane unaided (above right), but not quickly enough, said UC Berkeley researchers."
What are the implications for the organisms that lack this protein,supposing the theory is valid?
Originally posted by eradown
reply to post by queengenyfur
From research ,I did several years ago O- is the oldest human blood group. AB is believed to be the newest human blood group. As a side note, the blood on the shroud of Turin is believed to be AB-.