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Q.

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


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a

Glucose

b

Galactose

c

 Lactose

d

 Lactose and galactose 

answer is C.

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Detailed Solution

Concept: It is the primary source of sugar in milk. It is a big sugar molecule composed of two little glucose and galactose molecules.
A prime example of bacterial gene control is the lac operon gene regulatory system, which was the first well-known genetic regulatory system. E. coli bacteria are capable of digesting lactose. The lac operon genes, which code for crucial enzymes for lactose digestion and absorption, must be expressed by bacteria in order for lactose to be utilised.
Hence, option 3 is the correct answer.
 
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