PSYC 280 Study Guide - Mator Language, Rieti, Convergent Evolution
30 Aug 2014
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Ch 6 evolution of the brain and behaviour. Naturalists: disagreed with the idea that each species were created separately. Evolution by natural selection: introduced by wallace and darwin. Species were descended from a common ancestor but separated when environments split off or they moved natural selection allowed them to create different features (eg: finches with different beak size for nuts/fruit) Some of the variation among individuals is inherited. Not all offspring of a certain generation survive to reproduce. Variations among individuals affect the probability of their surviving, reproducing, and passing on traits. Sexual selection: darwin proposed that each sex are choosy" in terms of anatomical and behavioural features that favor reproductive success. Convergent evolution: similar ecological features bring about similarities in behaviour or structure in animals that are only distantly related. Eg: tuna is a fish but a dolphin is a mammal and they resemble similar body forms cause they evolved for efficient swimming.
