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NEET Biology question

BiologyBiotechnology: Principles and ProcessesNEET

During insertional inactivation, the presence of a chromogenic substrate gives blue coloured colonies if the plasmid in the bacteria does not have an insert. The blue colour is produced by the enzyme:

Answer: (C)

Solution

Alpha-glucosidase, restriction endonuclease and Taq polymerase play no role in this colour reaction, whereas an intact beta-galactosidase gene

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Question ID VK-125257