Gel Electrophoresis of Digested DNA
Several DNA samples were digested with different restriction enzymes (endonucleases) and separated by gel electrophoresis, as shown.
Which of the following best explains the varying number of fragments observed in the different lanes?
A
Different running buffers were used for the different lanes.
B
There were more HindIII restriction sites than HaeIII or EcoRI restriction sites.
C
A higher voltage was applied to the first lane.
D
There were more EcoRI restriction sites than HaeIII or HindIII restriction sites.