Looking for classes? Ksquare Career Institute, Bengaluru →
Which one of the following acts as an inducer for lac operon?
A
Sucrose
B
Lactose
C
Glucose
D
Galactose
Detailed Solution
Lactose (specifically its isomer allolactose, formed within the cell) acts as the inducer of the lac operon, binding to the repressor and preventing it from blocking transcription.