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MHT CET Biology question

BiologyMolecular Basis of InheritanceMHT CET

Select the two correct statements out of the four (I - IV) given below about lac operon. 1. Glucose or galactose may bind with the repressor and inactivate it. 2. In the absence of lactose, the repressor binds with the operator region. 3. The Z-gene codes for permease. 4. This was elucidated by Francois Jacob and Jacques Monod. The correct statements are

Answer: (C)

Solution

Statements 2 and 4 are correct; the repressor is inactivated by lactose (not glucose or galactose), so 1 is wrong, and

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Question ID VK-065678