Question

How does one visualize DNA on an agar gel?

Answer 1

Agarose gel electrophoresis is the method which is used to separate DNA, RNA and the proteins on the basis of their size. The technique uses the agar gel in which the DNA samples are loaded along with the dye ethidium bromide which is a fluorescent dye. The gel is placed under the source of UV light. The DNA forms separate bands according to their size. The larger one which runs to a smaller distance is placed at the bottom while the smaller ones which run faster are placed at the top.