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VARIATION AND SELECTION - Coggle Diagram

- - - - Cell
  - - - Francis Crick and James Watson
        
        double helix model
      - Rosalind Franklin
        
        Image of DNA by x-ray
  - - - adenine (A)
        
        Complementary Bases
      - thymine (T)
        
        Complementary bases
      - cystosine (C)
        
        Complementary bases
      - guanine (G)
        
        Complementary bases
  - - - protein
        
        Main Uses
        
        Enzymes (as biological cataliysts)
        
        Hormones (mesagges around the body)
        
        Structural proteins
        
        strength to cells/tissues
        
        different sequence of amino acid
        
        a unique shape
        
        carry out the particular function
        
        sequence of three bases (triplet code)
        
        Synthesis of protein
        
        ribonucleic acid carry out by (RNA)
        
        Messenger RNA (mRNA)
        
        Transfer RNA (tRNA)
        
        2 stages
        
        transcription
        
        the formation of mRNA (base uracil (U) instead of thymine (T)
        
        translation
        
        At the ribosomes (interaction of mRNA and tRNA)
        
        amino acids to form protein