Where are the longest fragments of DNA found in a gel electrophoresis

Power is turned on and DNA fragments migrate through gel (towards the positive electrode). After the gel has run, the fragments are separated by size. The largest fragments are near the top of the gel (negative electrode, where they began), and the smallest fragments are near the bottom (positive electrode).

Explanation:

because the light is a great source of energy for the plants to survive. (i hope this )