In gel electrophoresis method __________.

A Fragments of DNA can be seen without being coated with visible light.
B A natural polymer isolated from seaweed is used as a medium (gel).
C Glowing orange bands of DNA can be seen upon exposure to visible light on an ethidium bromide-coated gel.
D The larger the size of the DNA fragment in the agarose medium, the farther it will move.

Verified Solution

Answer & Solution

Correct Answer

(B) A natural polymer isolated from seaweed is used as a medium (gel).

Step-by-step Solution

Detailed explanation

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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