DNA

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  • DNA
    • chromosomes
      • a really long molecule of DNA
      • you will have 23 pairs of chromosomes any extra you will have a syndrome e.g down syndrome
    • Deoxyribose  Nucleic     Acid
    • it is a double helix of paired bases
      • guanine and cytosine
      • these will always pair together and there will be no other way
        • adenine and thymine
        • guanine and cytosine
      • adenine and thymine
    • DNA can replicate itself
      • 2. basses on free floating nucleotides pair up with matching bases
      • 1. molecules of DNA split
      • 3.cross links between the basses and the old DNA strand, and the nucleotides are joined together
    • DNA finger printing
      • genetic finger printing pin points individuals
      • this can be handy for police and to help identify
      • used in forensic science

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