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young red haired girl portrait
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Young Red Haired Girl Portrait

Evolution
Origins
Red hair is the rarest natural hair color in humans. The pale skin associated with red hair may have been advantageous in far-northern climates where sunlight is scarce. Studies by Bodmer and Cavalli-Sforza (1976) hypothesized that lighter skin pigmentation prevents rickets in colder latitudes by encouraging higher levels of Vitamin D production and also allows the individual to retain heat better than someone with darker skin. Rees (2004) suggested that the vividness and rarity of red hair may lead to its becoming desirable in a partner and therefore it could become more common through sexual selection.

File information
Filename:476317.jpg
Album name:People & Humanity
Rating (1 votes):55555
Keywords:#young #red #haired #girl #portrait
Filesize:43 KiB
Date added:May 04, 2012
Dimensions:700 x 436 pixels
Displayed:164 times
URL:displayimage.php?pid=476317
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