PSYC 307 Chapter Notes - Chapter 11: Relative Deprivation, Coronary Artery Disease, Laetoli
Cultural experiences not only change the way we think but also affect our body and health. 2 category of explanations for variation of human biology across cultures: Innate (different selection pressure over many generations in different geological areas) Modern humans/ homo sapiens first emerged around 100,000-200,000 years ago in. Compared with other species, humans are less genetically distinct from each other, but different populations of humans do differ from each other in many genes. Skin colour: adaptive response to climatic differences lighter skin emerged for absorbing sufficient ultraviolet radiation (to synthesize vitamin: in higher latitudes. Exceptions: inuit of greenland have darker skin, but eat high vd diet so lighter skin not required; some in southeast asia have light skin, but only migrated from higher latitudes in recent millennia. European & asian skin shown to have emerged through different genetic routes (evolved independently) Some more genetically resistant to certain pathogens because been local and exposed for many generations.