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Q.

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

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a

It stabilizes the DNA fragments so they do not degrade.

b

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

c

It visualizes the DNA fragments without the need for staining.

d

It increases the electrical charge of the DNA fragments.

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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