birthday suit

birthday suit - Darwins Birthday Suit: The Evolution of...

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Darwin’s Birthday Suit: The Evolution of Human Skin Pigmentation Dr. Nina Jabionoki It was noted that by Darwin & others that humans who lived closer to the equator had darker skins Is this a functional adaptation to sun exposure, or is there something more at play here? From The Descent of Man , 1871 “of all the differences between the races of man, the colour of the skin is most conspicious and one of the best marked…” “It was formerly thought that differences of this kind could be accounted by long exposure to different climates…this view has been rejected chiefly because the distribution of the variously coloured races, most of whom mush have long inhabited their present homes, doesn’t coincide with corresponding differences of climate” UVA Travels the deepest into the skin Responsible for aging skin UVB Travels to the epidermis Causes sunburns UVC Melanin Pigment in skin The evolution of highly melanized skin was essential for the survival of hairless early hominids
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This note was uploaded on 01/31/2012 for the course BIOL 1202 taught by Professor Gregg during the Spring '08 term at LSU.

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birthday suit - Darwins Birthday Suit: The Evolution of...

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