DNA Fragments Can Be Separated, and Their Sizes Can Be

DNA fragments can be separated, and their sizes can be determined with the use of gel electrophoresis. The fragments can be viewed by using a dye that is specific for nucleic acids or by labeling the fragments with a radioactive or chemical tag.
-DNA fragments that are 500 bp, 1000 bp, and 2000 bp in length are separated by gel electrophoresis. Which fragment will migrate farthest in the gel?

A) 2000-bp fragment
B) 1000-bp fragment
C) 500-bp fragment
D) All will migrate equal distances.