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Unformatted text preview: w/in human populations o Phenotypes Lactase persistence = lactose tolerant Lactase non-persistence = lactose intolerant o Genotypes Homo or Heterozygous for LAC*P = High digestive capacity (HDC) Homozygous for LAC*N = LDC What selective pressures shaped lactase persistence? o Availability of other forms of nutrients o Nomadic pastoralists used fresh milk on a regular basis and therefore had to be able to digest it What does study say about potential speed of evolution? o The speed of evolution can be relatively fast, especially when were dealing with a matter of nutrition deciding life or death Potential links between cultural & biological evolution in humans? o Certain ways of life could contribute to bio evolution depending on the way nourishment needs are met...
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This test prep was uploaded on 04/14/2008 for the course ANT 1 taught by Professor M.towner during the Summer '07 term at UC Davis.
- Summer '07