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Why is DNA integrity important in restriction digest?

Answer and explanation

Correct answer: Damaged DNA can alter the expected restriction fragment pattern

DNA integrity means that the DNA is sufficiently intact and has not been randomly broken or degraded. Pre-existing breaks can alter the expected restriction-fragment pattern and may produce smearing or extra/missing bands during gel electrophoresis. DNA concentration may matter for a reaction, but it is not the reason integrity is required. Exam tip: before digestion, a clear high-molecular-weight DNA band on an agarose gel usually indicates good DNA integrity.

Related tags

Restriction DigestDna IntegrityDna DegradationRestriction FragmentsGel ElectrophoresisCutting Of DnaProcesses Of Recombinant Dna TechnologyBiotechnology

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