So that will be the count node and the other end will have a positive charge that will be the anode. Now remember, DNA contains a negative charge as a result of all those phosphate groups. And so all these DNA fragments that came from the gene will contain negative charge and they will move from the calcio, the negatively charged side, to the anode, the positively charged side. So all these fragments will move along the same direction, but they will move at different speeds. And that's because if we examine the gel inside this setup, that gel is basically a special type of polymer that contains many different pores. And these pores basically contain a certain size to them.