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What effect can leftover salt in purified fragment have on ligation?

Answer and explanation

Correct answer: Ligation efficiency can decrease

Salt left in a purified DNA fragment can alter the ionic conditions of the ligation mixture and interfere with DNA ligase activity. As a result, joining of the vector and insert ends may become less efficient. Unlike option B, extra salt does not improve ligation. Exam tip: ensure proper washing and drying after DNA purification to avoid salt carryover.

Related tags

Restriction DigestionLigationDna PurificationSalt CarryoverDna LigaseRecombinant Dna TechnologyCutting Of DnaProcesses Of Recombinant Dna Technology

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