SG 2 205 - Part of STUDY GUIDE FOR EXAM 1(and comprehensive...

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1 Part of STUDY GUIDE FOR EXAM 1 (and comprehensive final): EVOLUTION ESPECIALLY BY NATURAL SELECTION For each pair, choose which reflects biology's current view of species and their origins: 1) stasis or change; 2) spp appeared over short time (few thous yrs) or long time (billions yrs); 3) since then no new spp have come to be or new spp arise and continue to arise from old spp; 4) spp are "perfect" at their origin or as environments change, spp change, becoming suited to their environment; 5) each spp exists for a purpose, for humans or a species exists if it can survive and reproduce in its environment, otherwise it goes extinct. evolution genotype versus phenotype fitness mutation migration = gene flow natural selection random genetic drift artificial selection adaptation, vs. acclimation relative frequency, proportion, percent (e.g., 1:1 = ½ = 50%; 1:0 = 1 = 100%) **Memorize the definition of evolution given in class before attempting to answer the following. Try to figure out the answers based on the definition. Drawing a circle to represent a population, as I did in class, may be helpful. Evolution is a change in the proportion of different ____________ over time.
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This note was uploaded on 04/07/2008 for the course BIOS 205 taught by Professor B.king during the Spring '08 term at Northern Illinois University.

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SG 2 205 - Part of STUDY GUIDE FOR EXAM 1(and comprehensive...

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