• anonymous
Why is the fact that DNA has a negative charge so important in the gel electrophoresis process?
  • Stacey Warren - Expert
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  • schrodinger
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  • anonymous
Since the DNA has a negative charge, when the current runs through the gel, it allows the DNA to move towards the positive end of the chamber. lol got the answer
  • Koikkara
yeah,....i too was thinkin, thanks for tip....well, DNA has a negative electric charge, and is attracted to the positive electrode. The gel resists the DNA as it moves; smaller pieces have an easier time moving through the pores in the gel and so travel further. Given a known gel preparation and electrical application, the length of a segment can be very precisely determined by the distance that it travels. It can then be cut from the gel using a scalpel.
  • anonymous
here a medal anyway

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