During the process of gel electrophoresis, fragments of negatively charged DNA are placed in wells at the negative end of the gel bed. The fragments of DNA are
then pulled toward the positive end of the bed. Why do some DNA fragments
travel farther than others?

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.

the answer would be b.:

880,000.

hope it ,

bioteacher101