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CH 15_student_outine - How Organisms Evolve How Organisms...

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Unformatted text preview: How Organisms Evolve How Organisms Evolve Chapter 15 Chapter 15 Using Knowledge of Evolution to Fight Disease The Causes of Evolution 1. 2. 3. 1. 1.- - Population Genetics and Evolution Hardy-Weinberg Equilibrium 1. 2. 3. 4. 5. Allele Frequency & Genotype Frequency Parents: Genotype freq Allele freq Kids: Genotype freq Allele freq Causes of Evolution: Mutation Mutations Occur Spontaneously Bacterial colonies never exposed to antibiotics Transfer colonies to 3 dishes containing streptomycin Only streptomycin-resistant colonies grow, in same positions Figure 15-1 Causes of Evolution: Gene Flow Causes of Evolution: Genetic Drift Population Size & Genetic Drift Large population size Small population size Figure 15-2 Genetic Drift Founder effect Populatio n bottleneck Chance events Genetic Bottlenecks Reduce Variability Figure 15-3 Founder Events Increase Likelihood of Rare Alleles Figure 15-4 Causes of Evolution: Non-random Mating Non-random mating Figure 15-6 Sexual Selection Figure 15-7 Causes of Evolution: Natural Selection Important Points Re: Natural Selection...
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This note was uploaded on 03/03/2009 for the course BIOL 1001 taught by Professor Minor during the Spring '08 term at LSU.

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CH 15_student_outine - How Organisms Evolve How Organisms...

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