PSYC 208 : Nicholas Wong psyc 208 notes.docx
Document Summary
Lecture 2 [sept 10th, 2012]: introduction: introduction, evolution: change over time in organic structure or behaviour [change over time in gene frequency, structural similarities, fossil record, embryological development, dna, evolution by natural selection, species are created, species go extinct, species are well adapted, species share similarities, darwinian evolution, principles of evolution, variation ii, selection. Intentional breeding for certain traits, or a combination of traits i: explains domestication of plants & animals, natural selection, selection comes from environment, explains speciation, extinction, adaptation, most mutations are deleterious and selected out (negative selection), but some are neutral and a few are actually advantageous (positive selection, selection types, stabilizing selection, decreases variability in population; environment is stable and intermediate forms are favoured by selection (risk taking) Increases variability and might lead to speciation; extremes at both ends of the distribution are favoured over intermediate forms (e. g. , body size: sexual selection, selection comes from own species: i. ii.
