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What is the role of agarose gel in gel electrophoresis of DNA fragments?

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It stabilizes the DNA fragments so they do not degrade.

It acts as a medium through which DNA fragments can be separated based on size.

It increases the electrical charge of the DNA fragments.

It visualizes the DNA fragments without the need for staining.

answer is B.

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Detailed Solution

Agarose matrix acts as a sieve which resolves the DNA fragments base don their size when they move across the matrix under electric field.

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