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Post by djoser-xyyman on Jul 7, 2011 6:23:30 GMT -5
Study conducted on South Africans Colored and Bantu in the early 1900s
================= QUANTITATIVE DATA ON SKIN PIGMENTATION IN SOUTH AFRICAN RACES H. P. WASSERMAN ' AND
Several qualitative studies on skin pigmentation in South African populations are available:' while the only published quantitative data, those of Tobias: are concerned mainly with genetic and anthropological problems. Weiner et al.. '" in their study of South African populations only include data on the Cape Coloured as measured in Cape Town, and on some South West African Bantu and Bushmen populations.
A note was made of the eye colour in each individual. As most investigators using an eye-colour chart finally reduce their results to brown-black, intermediate and blue, no attempt was made to match the eye colour with a colour chart. Any eye colour that was not brown or blue was classified as 'intermediate'.
The Bantu group consisted of 104 males of whom 99 were Xhosa, 3 Sotho and 2 of the Bubeka tribe
Note on Eye Colour Eye colour has been studied by various workers. Our results largely correspond to previously reported observations. As far as White males are concerned, the study by Van der Westhuysen' differs markedly from our findings, which, however, agree closely with those of Grobbelaar' and Skinner.' The females in this group have about the same distribution of eye colour as the males.
In the Bantu, black and brown eyes occurred in all our cases. Blue or intermediately coloured eyes do, in fact, occur but are extremely rare.
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Post by djoser-xyyman on Feb 11, 2012 18:45:44 GMT -5
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Post by djoser-xyyman on Feb 16, 2012 22:08:31 GMT -5
Human skin color diversity is highest in sub-Saharan African populations.
Relethford JH.
Source
Department of Anthropology, State University of New York College at Oneonta, 13820, USA.
Abstract
Previous studies of genetic and craniometric traits have found higher levels of within-population diversity in sub-Saharan Africa compared to other geographic regions. This study examines regional differences in within-population diversity of human skin color. Published data on skin reflectance were collected for 98 male samples from eight geographic regions: sub-Saharan Africa, North Africa, Europe, West Asia, Southwest Asia, South Asia, Australasia, and the New World. Regional differences in local within-population diversity were examined using two measures of variability: the sample variance and the sample coefficient of variation. For both measures, the average level of within-population diversity is higher in sub-Saharan Africa than in other geographic regions. This difference persists even after adjusting for a correlation between within-population diversity and distance from the equator. Though affected by natural selection, skin color variation shows the same pattern of higher African diversity as found with other traits.
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Post by djoser-xyyman on Dec 8, 2012 19:20:34 GMT -5
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Post by djoser-xyyman on Dec 8, 2012 19:22:34 GMT -5
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Post by djoser-xyyman on Dec 8, 2012 19:24:41 GMT -5
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Post by djoser-xyyman on Dec 8, 2012 19:27:42 GMT -5
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Post by djoser-xyyman on Dec 8, 2012 20:35:09 GMT -5
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Post by djoser-xyyman on Dec 8, 2012 20:37:01 GMT -5
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Post by djoser-xyyman on Dec 8, 2012 20:40:04 GMT -5
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Post by djoser-xyyman on Dec 8, 2012 20:42:32 GMT -5
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Post by djoser-xyyman on Dec 8, 2012 20:43:49 GMT -5
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Post by djoser-xyyman on Dec 8, 2012 20:48:40 GMT -5
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Post by djoser-xyyman on Dec 8, 2012 20:50:54 GMT -5
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Post by djoser-xyyman on Dec 8, 2012 20:53:02 GMT -5
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