Are Blackfoot Indians high in rhesus negative blood?

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The Blackfoot Confederacy or Niitsitapi (ᖹᐟᒧᐧᒣᑯ, meaning “the people”) is the collective name of three First Nation band governments in the provinces of Saskatchewan, Alberta, and British Columbia, and one Native American tribe in Montana, United States. The Siksika (“Blackfoot”), the Kainai or Kainah (“Many Chiefs”), and the Northern Piegan or Peigan or Piikani (“Poor Robes”) reside in Canada; the Southern Piegan/Piegan Blackfeet or Pikuni are located in the United States.
Reading up on Blackfoot Indians, I have learned a few things I wasn’t aware of before.

The A blood allele is somewhat more common around the world than B. About 21% of all people share the A allele. The highest frequencies of A are found in small, unrelated populations, especially the Blackfoot Indians of Montana (30-35%), the Australian Aborigines (many groups are 40-53%), and the Lapps, or Saami people, of Northern Scandinavia (50-90%). The A allele apparently was absent among Central and South American Indians.

Distribution of Blood Types leaves out other groups high in A blood:
The Andamanese are around 60% blood type A. The Armenians 50%. And the Assyrians are also worth mentioning.
It should also be mentioned that 82% blood type A amongst Blackfoot Indians has been claimed in other sources.
The same sources state that 17% were blood type O and 1 percent AB.
This makes little sense, but does indicate a possibility of a pure A ancestry amongst the Blackfoot.

So are and were Blackfoot Indians high in rhesus negative blood?
There are no indications that they were. I have previously shown the claim that Cherokees were and are high in rh negative blood to be a 100 percent fabrication. This one will likely turn out to be the same. If you have more information, feel free to send it my way or leave a comment below.

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