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why Australian Aborigenes have straight hair
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[QUOTE]Originally posted by the lioness: [QB] . why do Australian Aborigenes have straight hair? [b]for the same reason Arabs, Iranians, Iraqis, Pakistanis and Indians have straight hair. [/b] example: [IMG]http://thumbs.dreamstime.com/thumblarge_587/12991513623XZ0ha.jpg[/IMG] all of these regions are along the route between Africa and Australia and are much closer to Africa. No need to bother pondering Australia, straight hair is predominant in regions much closer to Africa some with very dark skin. _______________________________________________________ sidebar: Also of Austrailians: Caroline Wilkenson, a Forensic anthropologist,said (2004) 1) Australoids have the largest brow ridges 2) Europeans have the second largest brow ridges 3) Africans have the third largest brow ridges 4) East Asians are "absent brow ridges." Austrailans have a combination of traits, some closer to Africans others closer to Eurasians, ex. hair, brow ridge,(limb ratios-I'm not sure about) ________________________________________________________ Theory: somewhere in the Middle East/South West Asia straight straight hair became predominant in most humans. For instance closer to Africa en route to Australia includes countries such as Iraq, Iran and Pakistan. People there have mainly straight hair. This may have been an adaptation to colder tempratures (esp nightime) This is before people even got to India. Many Arabs already have dark skin (Arabia had a lot of intermingling between people coming frorm North and South, including Africans) The adaptation of skin and hair are too separate things and each may change at different rates of time. if you have people like Iraqis/Iranians with straight hair and medium light skin and they were to go South, for example settle in Southern India, they could have straight hair but their skin would darken. It is theorized that afro kinky hair is an adpatation to humidity. South India is not as humid as a tropical rain forest. So this is how you can have straight hair and dark skin. People start out in a tropical hot humid environment, they leave and are transformed by the realtively colder/drier climate like Iraq or Iran but later go agian into a higher UV environment like South India (same latitude as Sudan) They retain the straight hair from before but acquire dark skin. The same would be true of Austrailians. As people pass through different climates they can retain some traits before reaching a final destination. . [/QB][/QUOTE]
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