Unformatted text preview: is inherited but if change happens doesn’t always get passed on; not reversible Ex.) increased lung capacity at HA 4. Genetic (population)- becomes fixed; inherited; not reversible; see on broad scale- whole population effected EX.) Skin color Solar Radiation • Skin pigmentation and UV radiation- near equator more UV and darker skin • “Vitamin D Hypothesis”- reasoning for selective pressure in northern latitude Vitamin D- helps in mineralizing bones The body’s need for vitamin d and for uv radiation to produce it provided a selective pressure for lighter skin in northern latitudes Temperature Extremes • Heat-sweating- and amount; -vasodilation • Cold-BMR-vasoconstruction...
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This note was uploaded on 04/07/2011 for the course ANTH 1001 taught by Professor Tague during the Fall '07 term at LSU.
- Fall '07