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CGP EDU Academic Team
Published on: August 21, 2026
What is the criterion for DNA fragments movement on agarose gel during gel electrophoresis?
Text Solution
Verified by ExpertsThe correct answer is:
B
In agarose gel electrophoresis, DNA fragments are separated based on size. Since DNA is negatively charged, all fragments move toward the positive electrode. However:
Smaller DNA fragments face less resistance in the gel matrix and therefore move faster and travel farther.
Larger fragments move slowly and remain closer to the wells.
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