Admixture in European-Americans

[galvez]

This subject has thrown a lot of "racialists" into a fit! ;D

www.dienekes.com/blog/archives/000110.html

According to a study by Mark Shriver, conducted with a sample from PA, more than 30% of "White" Americans have less than 90% European DNA.

Some "racialists" -- who might fall under the 30% category -- have even gone so far as to explain this by saying it's Hispanics calling themselves White skewing the results. However, as I have pointed out, there probably aren't that many Hispanics in PA.

Recent Euro immigrants to America are much more likely to be racially pure.

Great work, Dienekes!

[Arawn]

Would be intresting to do this in South Africa as well. My guess is that many of those Afrikaner/Boer purity fanatics would have a fair share of non-European ancestry, especialy the ones desendant from the early Dutch traders/settlers who had no problems with shaging the locals.

[alex221166]

Arawn said:

Would be intresting to do this in South Africa as well. My guess is that many of those Afrikaner/Boer purity fanatics would have a fair share of non-European ancestry, especialy the ones desendant from the early Dutch traders/settlers who had no problems with shaging the locals.

Here's a link to a site that addresses (in a hilarious way) non-European admixture in the early Afrikanders.

www.geocities.com/kempcountrymen

[Arawn]

Intresting, i knew already a little the history, but i didn't know that any research had been done.
Plus, if i'm not mistaken, quite a few of the early Dutch/Germans who arrived in the colony were themselves bonded labour, of low social status orign.

[Silveira]

I found the following text at the site you mentioned:

www.geocities.com/kempcountrymen/afrikaner1.htm

genetic diseases

from mail.medacad.org/www.ichg2001.org/abstracts/symposia.htm

S11. Disease Profiles in the Genetically Dinstinct Populations of South Africa

M. J. Kotze

Division of Human Genetics, Faculty of Health Sciences, University of Stellenbosch; Tygerberg, South Africa

[e-mail]

The genetically distinct populations of South Africa provide valuable information for molecular research. Only a small fraction of the sequence changes that arose in Africa has spread to Europe and other countries. The indigenous Khoisan people and African Negro slaves contributed to the unique gene pool of the white Afrikaner population (~3 million), that originated from approximately 2000 settlers who emigrated from Holland, Germany and France in the late 17th and early 18th centuries, with a lesser increment from England in the 19th century. This group provides an excellent example of founder events in human evolution. The origin of the Coloured population of South Africa can be traced back to 1652, when marriages between European colonists and the two indigenous populations, the Khoi and the San, occurred relatively frequently. An additional gene flow to this gene pool came from the Indian traders and slaves from East Africa and Madagascar, who were either completely Negroid or Negroid with Malay or Indonesian admixture.

The high prevalence of several genetic diseases in the Afrikaner population resulted from a reduction in genetic variability due to geographic isolation and religious/cultural bonds, coupled to rapid population expansion over 10-12 generations. This was confirmed by molecular analysis of diseases such as familial hypercholesterolaemia, variegate porphyria and hereditary haemochromatosis. These studies illustrated the importance of genetic factors underlying population/ethnic differences in disease risk and defined the recently admixed Coloured population as a valuable candidate population for the identification of genes/mutations underlying complex diseases. This population is currently studied extensively, in an attempt to identify genetic factors associated with hypertension or modified risk of HIV infection and progression to AIDS. Information gained through the analysis of disease profiles in the African context has contributed to our understanding of why certain diseases affect different populations at different rates.