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Chapter Objectives

This chapter has seven major objectives:



  1. You should be able to distinguish between microevolution and macroevolution


  2. You should know the terms "population" and "breeding population" as used in evolutionary theory. You should understand how they are defined in relation to a research question.


  3. You should be familiar with how genotype and allele frequencies are calculated in a population.


  4. You should be able to discuss the Hardy-Weinberg equilibrium model and know what assumptions are necessary to predict equilibrium in a population.


  5. You should familiarize yourself with the four evolutionary forces (mutation, natural selection, genetic drift, and gene flow). You should be able to explain how mutation introduces change into a population; how fitness and natural selection operate on allele frequencies; how genetic drift is affected by population size; and the means by which gene flow occurs.


  6. You should understand that the four evolutionary forces act together to produce allele frequency change and how that occurs.


  7. You should be aware that nonrandom mating occurs and know its genetic effect.









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