PSYC14H3 Chapter Notes - Chapter 11: Genetic Drift, Genetic Variation, Melanin
Document Summary
Two distinct categories of explanation for the variation of human biology: human in different parts of the world were subject to different selection pressures over many generations human genome diverging across different populations. Innate biological differences across cultures: ppl living in different cultures have experiences within their onliftimes that have an impact on their biology. Vd is not synthesized in the body unless uvr penetrates the skin layer and catalyzes its production. The cultural practice of dairy framing, which brought with it various nutritional advantages, led to the selection of lactase persistence among cattle-raising populations (cultural factors genotype) Eu solved this problem in middle age by creating the cultural practice of drinking beer and wine instead of water. Asians boiled their water and drink tea. Ey evolved to better digest alcohol compared with asians (asians are less likely than eu to have an enzyme that sufficiently detoxifies alcohol)
