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What problem occurs if DNA ladder is loaded in the wrong lane?

Answer and explanation

Correct answer: DNA fragment sizes may be estimated incorrectly

A DNA ladder contains fragments of known sizes and is used as a reference to estimate the sizes of sample bands. If the ladder is loaded in the wrong lane, or its lane is identified incorrectly, sample bands may be compared with the wrong marker and their fragment sizes may be estimated incorrectly. Restriction enzyme activity depends on digestion conditions, not on the lane containing the ladder. Exam tip: always record the loading order and prepare a clear lane map for a gel.

Related tags

Dna LadderAgarose Gel ElectrophoresisRestriction DigestDna Fragment SizeLane MapCutting Of DnaProcesses Of Recombinant Dna TechnologyBiotechnology

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