Is Rh- blood Caucasoid?

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This question keeps coming up, so let’s start with much of SE Asia where Rh- frequencies are at only around 0.5%:

Many of those categorised as Rh- in South East Asia are actually weak D.

That leaves a tiny amount of true Rh negatives that can easily be explained by migration from the west (and north, Russia).

The Ainu of Japan come to mind.

So do the Uyghurs of China.

In Africa, around 90% of those categorised as Rh- are actually partial D.

Again, the remaining 10% of already low numbers can be due to colonization.

And then there are a few tribes that stand out.

When you Google image “Berber people”, you will likely come across some pictures of the Dogon people of Mali.

The Dogon people may have originated from Egypt or Berbers, but their current north African DNA is only at around 5% with an additional 14% from Asia.

The majority of their gene pool is Subsaharan.

The Yoruba of Nigeria have elevated levels of Rh- blood as well as Neanderthal DNA likely due to ancient migration from far north.

Ethiopian tribes such as the Amhara and Tigray only have around 25% Subsaharan DNA

It is fair to assume, that those with Rh- blood get it from a Caucasoid ancestor.

Does that mean Rh- blood is Caucasian blood?

Yes and no.

Most Europeans are not Rh-.

However:

If you are Rh-+ with Caucasoid ancestry, there is an around 57.14% chance you carry the Rh- recessively.

Certain tribes stand out with high Rh-frequencies.

The ancient Hebrews were likely high in Rh- blood and especially Sumerians.

We know about the Basques as well as the Berbers and other groups such as the Persians before the Arabic conquest.

Thank you for reading.

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– Mike Dammann

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