Question
Biology Question on Molecular Basis of Inheritance
In Negative operon
A
Inducer binds with repressor
B
Co-repressor does not binds with repressor
C
Corepressor binds with inducer
D
CAMP have negative effect on lac operon
Answer
Inducer binds with repressor
Explanation
Solution
The correct option is(A): Inducer binds with repressor. An inducer is a molecule responsible for governing gene expression by interacting with protein repressors or activators. In the case of the lac operon, which is a negatively regulated inducible operon, Lactose serves as the inducer molecule. When the inducer is present, it binds to the repressor protein, altering its shape in a way that prevents it from attaching to the operator. Consequently, this molecular interaction regulates gene expression.