Botany-Genetic Code
NEET Botany Genetic Code MCQ Question
Type: MCQ-fact-Medium-Class 12
What is the main function of lactose in the regulation of the lac operon?
A
It acts as an inducer for the operon.
B
It blocks the operator region.
C
It increases glucose uptake.
D
It synthesizes the repressor protein.
Correct Answer
Option A
Detailed Explanation
Lactose acts as an inducer for the lac operon by enabling the operon to be switched on when lactose is present in the absence of glucose, allowing RNA polymerase to transcribe the operon.
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