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Questions  

Which of the following is required as inducer (s) for the expression of Lac operon?

a
Lactose
b
Lactose and Galactose
c
Glucose
d
Galactose

detailed solution

Correct option is A

The inducer of lac operon is lactose. In the absence of a preferred carbon source such as glucose, if lactose is provided in the growth medium of the bacteria, the lactose is transported into the cells through the action of permease. The lactose then induces the operon.

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