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How can ethanol carryover be suspected in restriction digest?

Answer and explanation

Correct answer: Poor or incomplete enzyme reaction and a history of a wet DNA pellet

If a DNA pellet is not dried properly after an ethanol wash, residual ethanol may inhibit restriction enzyme activity. This can cause weak or incomplete digestion. A change in enzyme colour is not a reliable indication of ethanol carryover. Exam tip: For a poor restriction digest, check DNA purity, residual ethanol, and correct buffer conditions.

Related tags

Restriction DigestionEthanol CarryoverDna PurificationRestriction EnzymesEnzyme InhibitionCutting Of DnaProcesses Of Recombinant Dna TechnologyBiotechnology

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