IB Biology Evolution and Classification

IB Biology Evolution and Classification

1. What is EVOLUTION?

   • Evolution is the cumulative change in the heritable characteristics of a population
   • Evidence for Evolution
     • 1) Adaptive Radiation/Homologous Structures
       • 2) Fossil Records
         • Direct
         • Indirect
         • Law of Fossil Succession
         • Fossilization
         • 3) Selective Breeding
           • Examples: Breeding horses for speed (race horses) versus strength and endurance (draft horses) Breeding dogs for herding (sheepdogs), hunting (beagles) or racing (greyhounds) Breeding cattle for increased meat production or milk Breeding zebras in an attempt to retrieve the colouration gene from the extinct Quagga
           • 4) Natural Selection
             • C. Darwin
             • 5) Variation
               • Mutation
               • Meiosis
               • Sexual Reproduction
         • Carbon Dating
       • Ancestral Background

2. Binomial System

   • Classification of Animals and Plants
     • "King Phillip Came Over For Group Sex" Kingdom Phylum Class Order Family Genus Species

3. Dichotomous Key

4. Cladistics and Cladograms

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