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AP Biology 2007-2008 Evolution of Populations Doonesbury - Sunday February 8, 2004.
AP Biology 2007-2008 Evolutionary Forces What changes populations?
Geographic Isolation How about taking a swim in this gene pool??
IT’S ALL GENETIC…. Get my drift? Founder effect When a new population is started by only a few individuals some rare alleles may be at high frequency;
Forces of evolutionary change Natural selection – traits that improve survival or reproduction accumulate in the population ADAPTIVE change (survival.
Mechanisms for Evolution
