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why Australian Aborigenes have straight hair
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[QUOTE]Originally posted by xyyman: [QB] I give tutorials in case you are interested.. . . yeah that's right play dumb. You missed it? I am with Makova NOT Jablonski. I thought I made that clear. [QUOTE]Originally posted by xyyman: [qb] Who is your daddy??? From the study. Now If I mention your name in a post just salute me. ==== There are [u]2 primary explanations for the evolution of lighter skin in regions of low UVR[/u]. The first suggests that light skin is [b]merely due to the relaxation of functional constraint[/b] and that derived alleles associated with lighter pigmentation may have simply drifted to high frequency in the absence of strong purifying selection (Brace 1963). ****edit by xyyman-now Makova 2006**** The [u]second explanation [/u]suggests that in lowerUVRregions, positive selection would have favored mutations leading to lighter skin as a way to[b] maximize cutaneous vitamin D synthesis[/b] (Rana et al. 1999; Jablonski and Chaplin 2000). [/qb][/QUOTE] [/QB][/QUOTE]
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