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Daily Review #4

Daily Review #4. Define: Biogeography Homologous structures Analogous structures Vestigial structures Embryology. Genetics and Molecular Biology. Not present for Darwin Common genetic code Use same molecules Present in all organisms Homologous molecules

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Daily Review #4

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  1. Daily Review #4 • Define: • Biogeography • Homologous structures • Analogous structures • Vestigial structures • Embryology

  2. Genetics and Molecular Biology • Not present for Darwin • Common genetic code • Use same molecules • Present in all organisms • Homologous molecules • Similar in structure and chemical make-up • Cytochrome c • Hox genes • Timing in growth in embryos • One set for front/hind limbs • Minor changes produce major changes

  3. Testing Natural Selection • Darwin’s finches • Different beaks in different environments • Beak type changed during dry spells • Natural selection can occur rapidly • Several examples of variations leading to adaptations

  4. Evaluation • Supported and expanded • Offers insight into infectious diseases • Constantly reviewed and revised • Debate on • How species arise • Why species become extinct • How life began • How evolution occurs not whether it does

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