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  4. Alien DNA is inserted in the coding sequence of an enzyme β-galactosidase in artificial cloning vector, a plasmid. How will you select the recombinants in presence of chromogenic substrate?

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Q. Alien DNA is inserted in the coding sequence of an enzyme $\beta$-galactosidase in artificial cloning vector, a plasmid. How will you select the recombinants in presence of chromogenic substrate?

Biotechnology : Principles and Processes

Solution:

Correct answer is (b) If the colonies do not produce any colour then they are recombinants