Biology Topic 4

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  • Created by: meaticus
  • Created on: 13-10-17 13:15
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  • Biology Topic 4
    • Evoloution by Natural Selection
      • Survival of the fittest
        • Only the most adapted survive
      • Competition for resources
      • Arise through mutations
    • Evidence of Evoloution
      • Lucy
        • One of the first big discoveries, showed how early humans evolved from apes
      • Leakey fossils
        • Series of fossils that kick started the search for human evoloution
      • Stone tools
        • Sediment around them allows them to be dated
        • Untitled
    • Classification
      • Started as 5 kingdoms
      • DNA analysis lead to 3 domains
        • Archaea
        • Bacteria
        • Eukarya
      • Grouped in: Kingdom, Phylum, Class, Order, Family, Genus and Species
    • Genetic Modification
      • Crops are modified for many reasons
        • Increased yield
        • Resistance to pests
        • Resistance to certain weather
      • Desired traits are taken from desired organisms
    • Tissue Culture
      • Plants can be grown
        • Leaf tissue is taken and grown into hundreds of clones
      • Used for medical research
        • Animal, tumour, cells are grown and researched to test and develop medicine

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