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NATURAL SELECTION – prereading Define Key terms for section 13.1 Population Natural selection Adaptation Reproductive isolation Gradualism Punctuated equilibrium Answer review for section 13.1 List 2 observations made by Charles Darwin during his 5-year voyage that led him to conclude that living species evolved from extinct species. Describe how natural selection occurs. Summarize the modern theory of evolution by natural selection. Compare punctuated equilibrium model of evolution with the gradualism model. Define key terms for section 13.2 Paleontologist Vestigial structure Homologous structure Answer review for section 13.2 Relate how the fossil record provides evidence that evolution has occurred. State how comparing the amino acid sequence of a protein can provide evidence that evolution has taken place. Describe how comparing the anatomy of living species provide some evidence of evolution. Define key terms for section 13.3 Divergence Speciation Subspecies Answer review for section 13.3 List four elements of natural selection. Describe the mechanism that causes population changes in antibiotic – resistant bacteria. Identify what caused the change in the finch’s beaks as seen in Grant’s study. Describe how speciation takes place.