Question:
During gel electrophoresis migration of DNA fragments leading to their separation takes place on the agarose gel. Choose the correct option:
During gel electrophoresis migration of DNA fragments leading to their separation takes place on the agarose gel. Choose the correct option:
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In gel electrophoresis, smaller DNA fragments migrate faster and farther than larger ones.
Updated On: Jan 13, 2026
- The smaller the fragment size, the farther it moves.
- Positively charged fragments moves to farther end.
- The larger the fragment size, the farther it moves.
- The negatively charged fragments do not move.
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The Correct Option is A
Solution and Explanation
Step 1: DNA is negatively charged and moves towards the positive electrode in electrophoresis.
Step 2: Smaller DNA fragments pass more easily through the agarose matrix, moving farther than larger ones.
Step 3: Therefore, separation is based on size: smaller = farther.
Step 2: Smaller DNA fragments pass more easily through the agarose matrix, moving farther than larger ones.
Step 3: Therefore, separation is based on size: smaller = farther.
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