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Why is it good to keep gel slice small in restriction fragment gel extraction?

Answer and explanation

Correct answer: Less excess agarose improves DNA binding and recovery

Keeping the gel slice as small as possible reduces the amount of agarose carried into purification. Less agarose helps the DNA bind efficiently to a silica column or other purification matrix and can improve DNA recovery. A larger slice does not increase the size of the DNA fragment; it mainly adds unnecessary agarose and possible impurities. Exam tip: cut only the minimum gel surrounding the required DNA band.

Related tags

Gel ExtractionDna PurificationAgarose GelDna RecoveryRecombinant Dna TechnologyCutting Of DnaProcesses Of Recombinant Dna TechnologyBiotechnology

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