DNA Fragment Separation By Gel Electrophoresis
Several DNA samples were digested with various restriction enzymes (endonucleases) and separated via gel electrophoresis, as shown in the following diagram.
Which of the following accounts for the distinct banding patterns observed in the different lanes?
A
Differences in the chemical buffers applied to the individual lanes
B
Differences in the terminal configurations of the fragments, such as blunt versus sticky ends
C
Differences in the electrical voltage applied to the individual lanes
D
Differences in the sizes of the DNA fragments among the samples
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