In the gel electrophoresis method . . . . . | vedclass

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(B) In gel electrophoresis,agarose,which is a natural polymer extracted from seaweeds (like Gelidium and Gracilaria),is used as the matrix or gel medi

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$A$ natural polymer extracted from seaweed is used as the medium (gel).

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(B) In gel electrophoresis,agarose,which is a natural polymer extracted from seaweeds (like Gelidium and Gracilaria),is used as the matrix or gel medium. Option $A$ is incorrect because $DNA$ fragments are invisible without staining. Option $C$ is incorrect because $DNA$ bands stained with ethidium bromide only glow under $UV$ light,not visible light. Option $D$ is incorrect because,in gel electrophoresis,smaller $DNA$ fragments move faster and farther through the agarose matrix than larger fragments due to the sieving effect.

In the gel electrophoresis method . . . . . . .

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