Biology, B1, you and your genes

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  • Created by: Nadia omg
  • Created on: 19-12-12 20:06
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  • Biology, b1, you and your genes.
    • proteins
      • carry oxygen in the blood
      • fight bacteria and viruses
      • move muscles
      • build cells
      • send chemical messages around the body
    • clones
      • a  clone is a genetically identical orginism.
      • cloning plants.
        • cloning plants is useful because they are easy to clone and scientists can see how much environmentaland genetic factors effect the way they grow, which they cannot to with humans for ethical reasons.
          • you can see how the environment affects the apperance of a plant by not supplying it with enough water/sunglight ect.
    • huntingtons disease
      • huntingtons disease is an inherited genetic disorder. symptons don't appear until middle age.
        • symptoms
          • problems controlling their muscles, twitching
          • increasingly forgetful
          • mood swings
          • eventually can't control movement
            • fatal
          • Untitled
          • finds it difficult to understand and concentrate
    • chromosomes
      • every human body has 23 pairs of chromosomes your genes come in pairs
      • 46   chromosomes
    • cystic fibrosis
      • symptoms
        • weight loss
        • chest infections
        • difficulty in breathing
        • difficulty in digesting food
    • Embryo selection
      • embryos can be produced by IVF to prevent babies from haiving genetic disorders.
        • Ova are harvested from the mother and fertiliseed
          • the embryos are tested for faulty allele
            • healthy embryos are implanted into the uterus
      • after fertilisation embryos are allowed to divide into eight cells before a single cell is removed from each one for testing
        • the cells are then tested to see if they carry alleles for a specific genetic disorder.
  • move muscles
  • finds it difficult to understand and concentrate


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