PSYCH 3F03 Study Guide - Midterm Guide: Infidelity, Teratology, Chromosome
8 Jan 2017
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Document Summary
Natural selection that acts differently on different sexes. Individual characteristics resulting from environmental interaction of an organisms genotype (what is expressed) Most mutations reduce or are inconsequential to phenotypic quality. It is rare that a mutation that changes phenotypic quality increases reproductive success. Traits did not evolve to fulfil a role, a role was fulfilled by a trait and individuals with that trait out reproduced those without. The natural tendency for organisms to advance to a higher form. Acquired characteristics are inherited through animal"s struggle to survive. Organisms with a particular heritable variant have more offspring than those that have other heritable variants, because the variant helps with survival and reproduction. No, reproduction is the driving force of evolution. Survival only alters evolution when it affects reproductive success. Variation in prevalence of heritable traits that increase or decrease reproductive success across a population of conspecifics. Competition between members of one sex for mating access to the other sex.
