ARCL-1006EL Study Guide - Midterm Guide: Divergent Evolution, Statistical Hypothesis Testing, Stereopsis

• School: Laurentian
• Department: Environment
• Course: ARCL-1006EL
• Professor: Alicia Hawkins

Document Summary

Micro-evolution: small scale, changes in allele frequencies, detectable in living populations (natural selection) Macro-evolution: large scale, especially speciation, over long period of time (adaptive radiations, co-evolution) Speciation: formation of new species: requires, mechanisms of micro-evolution and isolating mechanisms. Gradualism: the hypothesis that evolution proceeds chiefly by the accumulation of gradual changes. Punctuated equilibrium: species are very stable over long periods of time but that when divergence occurs it is quick. Biological species concept: groups of actually or potentially interbreeding populations that are reproductively isolated from other groups. Morphospecies: based on form; smallest cluster of organisms that can be distinguished from other such clusters by consistent phenotype traits. Chronospecies: based on time; two fossils separated significantly in time may be different species. Divergent evolution: macro-evolution produces species through divergent evolution; accumulation of differences between groups which can lead to the formation of new species. Linear evolution: macro-evolution produces species through divergent evolution.