biology b5 growth and develpment

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  • Created by: Anna Wood
  • Created on: 20-06-13 10:21
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  • b5 growth and development part 2
    • development of new organisms
      • up to 8 cell stage human embryo are
        • unspecialised
        • can have any gene switched on or on to form any kind on specialised cells
      • after the 8 cell stage human embryos are
        • becoming specialise
        • forming different type of tissues
    • stem cells
      • potentially used for
        • helping treating diseases
        • repairing damage to varous tissues
      • there are three source of stem cells
        • embryos
        • blood from umbilical cord
        • adult stem cells from bone marrow
        • only embryonic stem cells are unspecialised
      • ethical issues
        • Christians


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