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CHAPTER 12 OUTLINE

CHAPTER 12 OUTLINE. When did Darwin publish? with what focus? 1. 1859 2. worldwide biodiversity, patterns What is an example of natural selection? 1. bacteria and insects What is adaptation? 1. change to overcome a problem

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CHAPTER 12 OUTLINE

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  1. CHAPTER 12 OUTLINE • When did Darwin publish? with what focus? 1. 18592. worldwide biodiversity, patterns • What is an example of natural selection? 1. bacteria and insects • What is adaptation?1. change to overcome a problem • What is descent with modification?1. one species descends from another2. changes over time • Are bones the only evidence of evolution?1. comparative anatomy, comparative embryology2. DNA and proteins • Why were Darwin’s finches so important?1. mainland origins2. competition for limited food

  2. What is the struggle for existence?1. competition to survive • What are heritable traits that give advantages?1. genes passed from one generation to another2. affect survival and/or reproduction • How is natural selection a numbers game?1. 2 x 2 x 2 < 10 x 10 x 10; 8 < 1000 • What is the ultimate source of genetic variation?1. mutation2. shuffle the deck • What is a gene pool?1. combined alleles of every individual in a population • What are the four causes of microevolution?1. Genetic Drift2. Gene Flow3. Mutation4. Natural Selection

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