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Origin Of Light Skin In Africa
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[QUOTE]Originally posted by Doug M: [QB] If these bio evolutionary chemists are going to say certain genes define "light" and "dark" skin it would be helpful to define terms. Light and dark are relative. Europeans are lighter skinned than Khoisan. Khoisan are lighter than Sudanese. Also the time ranges given are before even the birth of modern HSS, meaning they are talking about general mutations of DNA but not necessarily any specific skin color in any specific population. Just like a person can carry a sickle cell trait and not have sickle cell, so too can somebody carry a "light skin" trait and not be light skinned. This is how you get two darker skinned parents giving birth to a lighter skinned baby because of some hereditary genetic traits that were dormant in the parents but active in the child. One also has to understand what aboriginal means in the context of human populations. When you talk of aboriginal you mean a population carrying many traits and mutations that may not always be positively expressed in any individual person but across the population is expressed at some percentage which given later migrations and bottlenecks becomes a dominant trait in a later population. Also we don't know the specific path of or locations of any ancestral remains for modern khoisan to determine what if any physical differences there are between modern khoisan and their ancestors 30, 40 or 50k years ago. [/QB][/QUOTE]
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