Why is the fact that DNA has a negative charge so important in the gel
electrophoresis process?

Question

Why is the fact that DNA has a negative charge so important in the gel
electrophoresis process?

anonymous · Answer

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 · Answer

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 · Answer

here a medal anyway