Differentiation between African populations

[Charlie Bass]

www.uvm.edu/~rsingle/other/PDF/Cao+TA-2004.pdf

The Ugandan population presents the alleles B*4402G and Cw*0501G with frequencies significantly higher than the other African populations in this study. These alleles form the extended haplotype A*0201G-B*4402G-Cw*0501G, which is frequently found in Caucasians; their finding in Ugandans, combined with the frequent observation in this population of haplotypes commonly found in Caucasoids and the closer genetic distances between Caucasians and Ugandans (Table 6), could indicate a recent gene flow of Caucasian or North African genes into the Ugandan population. This observation could explain the greater allelic and haplotypic HLA diversity of the Ugandan population.


Opposing the view of recent admixture, it could be argued that, as has been shown for other loci in the geographically close populations from Ethiopia and Somalia (110–113), the Ugandans present a subset of the variability that is present in other sub-Saharan African populations. Some populations in north-east Africa might have diverged from the rest of sub-Saharan Africa, early in the history of modern African populations; a subset of this north-east African population may have then migrated out of Africa and populated other regions of the world (110–114). Studies of mitochondrial DNA (4, 6, 7, 115) and Y-chromosome diversity (116–119) in other populations, and the distribution of HLA alleles in Ugandans reported here are consistent with
the hypothesis of the migration of modern humans out of an East
African population. The absence of the widely distributed African
haplotype A*3001-B*4201-Cw*1701G in Ugandans may reflect an
early differentiation between Ugandans and other African populations.

[Charlie Bass]

We know Ugandans were not flooded by so called "Caucasoids" and North Africans and yet they occupy a similar position as Somalis and Ethiopians in distribution of alleles. The later position seems way more plausible.

[zarahan]

Good find Bass.
lol, at their terminology - "Caucasoid gene flow." Most of the Eurocentric academy rarely talk about the reverse scenario- "Negroid gene flow" into Greece, when Greeks are found to have sub-Saharan haplotypes. Perhaps since they realized that "wandering Caucasoids" into Uganda to explain gene diversity is a real stretch, they had to admit the obvious and more viable alternative: that genetic variation WITHIN East Africa accounts for the range of genetic diversity seen, without needing "wandering Caucasoids" to explain anything. THey do note that genetic differences between various African populations are very high, higher than among "Caucasoids" and again admit that this points to Africa as the source of modern humanity, as well as Afric's high BUILT-IN, NATIVE genetic diversity. They are to be credited with bringing these facts forward.

They also note several times the phenomenon of gene DIFFERENTIATION WITHIN Africa - This should once again remind the race mongers that some outside force, usually "incoming Caucasoids" or alleged "Middle Easterners" are not needed to explain the biological diversity of African peoples.
QUOTE:

"The analysis of alleles present in multiple African populations
suggests that the most important diversification within allelic
lineages occurred before the separation of linguistic groups.
Because of the sequence similarities and the readily recognizable
putative mechanisms for the generation of some alleles by mutations
in the backbones of other progenitor alleles, it can be postulated that
some alleles arose from others (18, 66–68). The common occurrence of
sequence-related alleles in multiple African populations strongly
suggests that their generation occurred before the expansion and
differentiation into the modern African populations."

^^How do you read the above Bass?



This diversity of Africa must be stressed again and again against EUrocentric models that seek to
stereotype its peoples into narrow pigeonholes.