Thursday, April 16, 2009

Y-Haplotypes in Africa

A new paper, Genetic and demographic implications of the Bantu expansion: insights from human paternal lineages, finds "a recent origin for most paternal lineages in west Central African populations most likely resulting from the expansion of Bantu-speaking farmers that erased the more ancient Y-chromosome diversity found in this area", although the same is not true for mtDNA analyses, and "some traces of ancient paternal lineages are observed in these populations, mainly among hunter-gatherers." Much more interestingly, "[w]e also find the intriguing presence of paternal lineages belonging to Eurasian haplogroup R1b1*, which might represent footprints of demographic expansions in central Africa not directly related to the Bantu expansion."

A quick overview of previous info at Wiki. Note that R1b1* means R1b1 without any further mutations (or returned to such state by back-mutation). R1b1 (without the asteroid) refers to the group of haplotypes with the single nucleotide polymorphism (SNP) M343, along with any and all further mutations.

Dienekes' Anthropology Blog (from whom I got the reference) has an informative article, with some info beyond the abstact: Paternal traces of Bantu expansion + African R1b1 mystery

Searching for other information on this subject, I found:

Bantu language trees reflect the spread of farming
across sub-Saharan Africa: a maximum-parsimony
analysis


Farmers and Their Languages:
The First Expansions


A Back Migration from Asia to Sub-Saharan Africa Is Supported by High-Resolution Analysis of Human Y-Chromosome Haplotypes also here

The phylogeography of Y chromosome binary haplotypes and the origins of
modern human populations


Phylogeographic Analysis of Haplogroup E3b (E-M215) Y Chromosomes Reveals Multiple Migratory Events Within and Out Of Africa

The Levant versus the Horn of Africa: Evidence for Bidirectional Corridors of Human Migrations

The Making of the African mtDNA Landscape

Variation of Female and Male Lineages in Sub-Saharan Populations: the Importance of Sociocultural Factors

Bantu and European Y-lineages in Sub-Saharan Africa

Map of Africa

Another map of Africa

Yet more, with climate data

One paper I could only find in abstract:

The genetic legacy of western Bantu migrations

3 comments:

  1. hey hey hey big up ma african ancestors (dont know if i spelt that right)

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  2. Is it possible that geneticists have been misled by Bantu theorists who created Bantu myth of a bunch of negroes who allegedly left Cameroon and populated the entire sub Saharan Africa? Is there really such a thing as a "BANTU" gene??These so called Bantu are linguistically,culturally,historically,anthropologically and even obviously, genetically diverse.I am a Muntu (sing.of Bantu) from Rwanda living in New York,USA,and I can tell you that when I moved to Ankole in western Uganda,it took me 6 months to learn Runyankore which is close to Runyarwanda.The whole Bantu theory is an embarrassment that needs to be completely discarded like the old hamitic mythology of the old colonial days.You geneticists please do not allow yourselves to be fooled by these self anointed African experts.My favourite account of Bantu genetic mystery is that some geneticists feel that such discrepancies can be explained by the fact that when Bantu started their historic migration,males took one route and females took a different one!
    Thank you and keep up the good work.
    Israel Ntaganzwa

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  3. I am afraid our geneticists are basing their research on false "Bantu" theories of the 19nth century European bounty hunters.There is no such a thing as a "Bantu" gene.A Muntu from Cameroon and another from Tanzania are as diverse as a Chinese and an Arab of North Africa,or an English and a Russian.When studying various African community genes,please do so without the word Bantu,hamitic,nilotic and other colonial jungle terms.
    Israel

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