AIPMT PRELIMS2010Botany-Genetics
AIPMT PRELIMS 2010 Botany Lac Operon Multiple Correct Question
Type: Multiple Correct-conceptual-Medium-Class 12
Select the two correct statements out of the four (a–d) given below about lac operon.
A
Glucose or galactose may bind with the repressor and inactivate it
B
In the absence of lactose the repressor binds with the operator region
C
The Z⁻gene codes for permease
D
This was elucidated by Francois Jacob and Jacque Monod
Correct Answer
Option D
Detailed Explanation
In the absence of lactose, the repressor binds to the operator, preventing transcription. The lac operon model was proposed by Jacob and Monod.
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