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What is the most important basis for selecting an enzyme in DNA cutting?

Answer and explanation

Correct answer: Its recognition site and the desired DNA ends

The governing concept is rational restriction-enzyme selection for a planned DNA construct. First, the enzyme’s recognition site must be present at the intended position and absent from regions that must remain intact, such as an essential insert sequence. Second, the type of ends produced matters: compatible sticky ends can promote directional or efficient ligation, whereas blunt ends may require different conditions and can be less efficient. The selected enzyme must also be compatible with the available reaction conditions, but recognition sequence and desired end structure are the central basis in this question. Tube colour, agar smell, and protein taste have no role in choosing a DNA-cutting enzyme.

Related tags

Enzyme SelectionRecognition SiteDna EndsCutting Of DnaProcesses Of Recombinant Dna TechnologyBiotechnologyClass 11 Mcq

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