PSYC 3280 Study Guide - Comprehensive Final Exam Guide - Natural Selection, Sperm Competition, Phylogenetic Tree
20 Nov 2018
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What is the evolutionary history of the species? (ultimate: behaviour- coordinated responses (observable behaviour) of living organisms to internal/external stimuli, behaviour frequencies change through natural selection, learning, and cultural transmission. Natural selection: direct fitness- number of offspring produced compared to other species, reproductive success- # born, # weaned, # survived to mate. Artificial selection: humans select behaviours and physical traits in animals (darwin bred pigeons, different breeds of the same species result from many generations of selective breeding. In order for natural selection to occur there must be: variations in a trait, fitness/reproductive consequences of the trait, the trait needs to be inheritable, sexual selection, directional selection, disruptive selection, stabilizing. Anisogamy and the bateman principle: anisogamy- male and female gametes are not the same in size. Intersexual selection- members of one sexy choose mates from the other sex (females) Males that possess that trait will be favored by females (red in primates)
