PSYC18H3 Chapter Notes - Chapter 2: Decision-Making, Social Status, Ultimatum Game
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Ex. advantageous for giraffe to have a higher neck to get food hanging from higher branches. He thought that behavior, and influences of behavior van be passed own (working out= children that are strong and healthy?) Population grow kept in check by various vices. Things like death, hunger and disease keeps our population in check, so we are not over-populating. This sounds similar to darwin"s survival of the fittest. Studied birds and fauna at the galapagos islands. He observed slight variations in finches" beaks, depending on island of origin. The beak evolved met the demands of the island (food source) (big beak, small beaks, pointy beaks) Naturalism selection: genetic variation: genotypes phenotype. Genotype (internal), phenotype (external: selection pressure. Pesticide-resistance insect: they have a genetic variation that makes them resistant to pesticides, after mating and passing down genes, their whole species becomes resistant. If it gets to heavy, it becomes a burden. The males with the big tails dye out etc.
