Chapter 9 - Cloning in plants and animals

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  • Created by: stef17
  • Created on: 04-05-16 09:51
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  • Chapter 9 - Cloning in plants and animals
    • Vegetative propagation
      • Asexual reproduction in plants
      • Naturally occurs in many plants (strawberries, elm trees)
      • Advantage: All plants have the same characteristics
      • Disadvantage; All individuals in a species are susceptible to the same diseases
    • Tissue culture
      • Growing new plants from stem, leaf or root cuttings
      • Grown in sterile conditions using callus (also known as explants)
      • Advantage: Can be done any time in any place
      • Disadvantage All susceptible to the same diseases, plants can be infected by fungi
    • Plant cloning in agriculture
      • Not done for annuals - sowing seeds is quicker
      • Only done on a large scale for potatoes
      • Done for lavender and fruit trees
    • Cloning animals
      • Non-reproductive cloning
        • Only produces a group of genetically identical cells - not a whole organism
        • Uses stem cells either from adults (these are only pluripotent) or from embryoes (these are totipotent)
      • Reproductive cloning
        • Production of a whole organism (dolly the sheep)
        • Many ethical issues


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