PSYC 3100 Lecture Notes - Lecture 1: Anthropomorphism, Punnett Square, Natural Disaster

• School: University of Guelph
• Department: Psychology
• Course: PSYC 3100
• Professor: Pat Barclay

Document Summary

Natural selection: competition + heritable variation + di erential reproduction (1,4,12: natural selection is non-random di erences in reproductive output , responsible for evolution of adaptive features / cumulative evolutionary change. Mutation (slightly di erent version of gene) & migration (in or out of a population): random with respect to the e ects of the gene. Genetic drift: random change in gene frequency with respect to the gene"s e ects. (think of punnett square, random natural disaster etc. that changes gene frequency) > non directive and non cumulative! Superfecundity: massive overproduction, species could expand exponentially but the population is able to remain stable due to predators, lack of resources and disease > creates a struggle for existence. Survival in a given environment is biased due to particular hereditary traits > a mutation/recombination themselves are random, but the probability of it being passed on is non-random if it impacts survival and/or reproductive abilities.