PSYCH 3F03 Lecture Notes - Lecture 2: Human Behaviour, Catastrophism, Epigenetics
6 Sep 2018
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Psych 3f03: evolution & human behaviour september 6th 2018 history of evolution and human. Evolution before darwin: evolution came before darwin, evolution change over time in organic (living) structure, one of the primary mechanisms of evolutionary change, jean pierre antoine de monet de lamark (1744-1829, causes of species change. Natural tendency for organisms to advance to a higher form. People think humans are epitome of human form. Species go extinct in catastrophes and are replaced by new species. Goals: explain why living organisms change in form over time, explain how new species emerge. Variation: organisms vary in phenotypic quality, wing length, trunk strength, bone mass (lighter or heavier, cellular structure, fighting ability, defensive ability, social cunning, variation provides the raw material for evolution, picture: hawaiian honeycreepers that feed on different things. Genetic drift: random changes in genetic makeup of population, occurring through, mutation, founder effects, random bottlenecks less genetic variation. Artifical selection: grafting, animal husbandry breeding animals, breeding/crossbreeding, cloning.
