Identify the labels M and N in the following | vedclass

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(D) The correct answer is $D$.In agarose gel electrophoresis,$DNA$ fragments are separated based on their size.Since $DNA$ molecules are negatively ch

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$M$-Largest $DNA$ bands,$N$-Smallest $DNA$ bands

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(D) The correct answer is $D$.In agarose gel electrophoresis,$DNA$ fragments are separated based on their size.Since $DNA$ molecules are negatively charged,they move towards the anode $(+)$ when an electric field is applied.The agarose gel acts as a molecular sieve,allowing smaller fragments to move faster and further through the gel matrix compared to larger fragments.In the provided diagram,the bands closer to the wells are larger because they move slowly,while the bands further away from the wells are smaller because they move faster.Therefore,$M$ represents the largest $DNA$ bands (closest to the wells),and $N$ (labeled as $S$ in the diagram) represents the smallest $DNA$ bands (farthest from the wells).

Identify the labels $M$ and $N$ in the following agarose gel electrophoresis representation.

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