Which of the following is required as inducer(s) for the expression of Lac operon
A. galactose
B. lactose
C. lactose and galactose
D. glucose

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1 Answers

Correct Answer - B
Lac operon is an inducible operon . Lactose is the substrate for the enzyme `beta` - galactosidase and it also regulates switching on and off of the opern . Hence, it is termed as inducer.

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