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  • Genetic modification
  • Transgenic mosquito expresing GFP in its eyes
  • DNA sequencing autoradiograph showing the researcher's annotations.
  • DNA sequencing. This method of DNA sequencing is called di-deoxy sequencing. It is used to determine the order of bases (A,C,G and T) in a piece of DNA using radioactively-labelled modified nucleotides. They are then separated by electrophoresis in a polyacrylamide gel and detected on x-ray film by a process called autoradiography.