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What is the downstream effect of using a wrong enzyme in cutting step?

Answer and explanation

Correct answer: Ligation and transformation results can fail

The direct answer is A: ligation and transformation results can fail. Restriction enzymes determine the ends produced on the vector and insert. If the wrong enzyme is used, the ends may not be compatible, the desired site may be cut incorrectly, or an important sequence may be damaged. DNA ligase may then fail to join the fragments efficiently, and transformation may produce few or no useful recombinant colonies. Option A is correct because an early cutting error can affect every later cloning step. Option B is wrong because PCR does not automatically improve merely because a wrong restriction enzyme was used. Option C is wrong because restriction digestion is not protein digestion. Option D is wrong because using the wrong enzyme does not purify the sample. Memory cue: wrong cut means wrong ends, and wrong ends mean poor joining.

Related tags

Wrong EnzymeDownstream EffectCloning Workflow

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