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Can tropical Africans have straighter hair?
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[QUOTE]Originally posted by Bettyboo: [QB] [QUOTE]Originally posted by Truthcentric: [qb] I was reading [URL=http://wysinger.homestead.com/hair_semma.pdf]this old study[/URL] which concludes that ancient Nubians had less tightly curled hair than what we normally associate with sub-Saharan Africans. I know some people here will claim that tropically adapted Africans have diverse hair textures, but according to [URL=http://en.wikipedia.org/wiki/Afro-textured_hair]Wikipedia[/URL], Afro-type hair is a tropical adaptation whereas straighter hair is more adaptive to a cold/low-UV environment, which makes me wonder if less curly hair in Africans does indicate some admixture with cold-adapted populations. The problem is that we all know that these people still had very tropical limb proportions, which would preclude the Eurasian admixture hypothesis. And how come I can't find photos of these Nubian mummies? Maybe their hair isn't as straight as the study authors seem to imply here? I wonder if these guys have looked at mummies like [URL=http://2.bp.blogspot.com/-SshJyvXjN4U/TfBzHwF0unI/AAAAAAAACtg/wQyTu18woXU/s1600/nubian-mummy.jpg]this[/URL]? [/qb][/QUOTE]^Hair type has nothing to with weather or climate, at least not when it comes to texture. There are a lot of people who are tropically adapted and have straight, wavy and curly hair. Hair texture is determined by the amount of cell turnover and production that controls that part of tissue organ which determines how follicles are shaped. Nappy hair comes from follicles that are pratically enclosed thus giving it (hair) a tight fit through the follicle causing the hair to flatten, thin, and cuticles to raise, which resembles the hair on many Africans head. The more open the follicle the straighter the hair is. The narrower the follicle the curlier hair will be. Africans and others are on the extreme of curly, and Mongol-type hair (including indigenous Amerindians and Native Americans) are on the extreme of the straightest hair. The straightest hair is the strongest and has the most open or roundest follicle and have the most cell turnover/production. The curliest hair has the weakest hair, the least open or the narrowest follicle and the least cell turnover/production. Genes that produce the cell and make up of hair follicles has a lot to do with tribes or nations blending amongst themselves, like as in incest, for long periods of time than it has to do with climate or temperatures. [/QB][/QUOTE]
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