Saturday, January 9, 2016

Haplogroup H probably Originated in Africa--not Asia

Pierron, et al (2013) proposes that haplogroup H entered Africa from the Middle East. Pierron et al, date the hg H older than 9k. They wrote:


The dates calculated from our data are in good agreement with this theory, since we dated the appearance of H and HV0 (ex pre-V) in the Middle East around 29,000 years before the Last Glacial Maximum. These haplogroups would then have been distributed throughout Europe. At the time of the Last Glacial Maximum, between 22,000 and 18,000 years BP, the H and HV0 haplogroups sheltered in the Franco-Cantabrian zone. Then the H1, (18,160 years BP), H3 (15,671 years BP), and V (16,428 years BP) haplogroups appeared as the climate started to improve and Europe was re-colonized. The U5b haplogroup also appeared (17,963 years BP) in the same area during that period. These four haplogroups re-populated Northern Europe in the same way as the haplogroups from the Southwest shelter zone.

But the idea that hg H is the result of a back migration from Europe to Africa, does not agree with the distribution of hg H in Africa. It is clear from the map that hg H is not found in Egypt. This seems strange because if it had entered Africa as the result of a back migration there should be more carriers of hg H in Egypt.
Badro et al (2013) published a map of African mtDNA. The map makes it clear that hg H is primarily found in Northwest and West Africa this would support the spread of hg into Europe via Iberia, rather than a back migration to Africa from the Middle East.
A back migration of hg H from Iberia to Africa is unlikely. In any area of research you look for the obvious , this would be true of the origination and spread of hg H. Obviously, if hg H originated in the Middle East, it would have spread from the Levant into Egypt, since Egypt is closer to the Middle East, than Iberia.


Badro et al (2013) has examined the frequency of hg H. These researchers found the highest frequency of hg H in the Libyan Sahara (61.29), Morocco (23.4%), Libya (25.8%), Mali (52.4%) and Burkina-Faso (22.5%).If hg H originated in the Levant there should be more carriers of hg H in the Middle East and Europe, than Sub-Saharan Africa (SSA).

If hg H in Africa is the result of a back migration the highest frequencies of this genome should move from the Levant through Arabia, Egypt and East Africa into the Sahara. But this is not the case in Egypt and Kenya there is o.o% of hg H, Saudi Arabia 8.7% and Yemen 4.7%.
Instead of the highest frequencies of hg H moving from the Levant into Africa, we find that the migration of hg H is reversed. The frequency of hg H, decreases from Western Europe e.g., France 45.4% to 25% in Palestine.
The frequency of hg H in Eurasia and Africa, suggest that hg H originated in Africa, and probably spread into Europe from Salelian Africa to Iberia and thence the Middle East. I believe most carriers of hg H migrated to Western Europe during the African invasion of Spain by Moors and Berbers and spread across Europe into the Middle East.
In summary, the presence of hg H in Europe is probably of recent origin. The Tuareg and other Black Berber groups probably helped spread H in Europe after they invaded Europe along with other sahelians/Moors during the Islamic period.

Badro DA, Douaihy B, Haber M, Youhanna SC, Salloum A, et al. (2013) Y-Chromosome and mtDNA Genetics Reveal Significant Contrasts in Affinities of Modern Middle Eastern Populations with European and African Populations. PLoS ONE 8(1): e54616. doi:10.1371/journal.pone.0054616

Pierron D, Chang I, Arachiche A, Heiske M, Thomas O, et al. (2011) Mutation Rate Switch inside Eurasian Mitochondrial Haplogroups: Impact of Selection and Consequences for Dating Settlement in Europe. PLoS ONE 6(6): e21543. doi:10.1371/journal.pone.0021543
Winters,C.(2012). There has been a Continuous Indigenous Sub-Saharan Presence in North Africa for 30ky. Comment: .

No comments: