Respuesta :
In a situation where a lac I mutation was to happen then the absence of repressor might happen. This would mean the cell is making proteins and wasting energy for no reason. The lac operon has a negative control because its transcription happens only when the repressor molecule stops binding to the operator region.
Answer:
The lac operon is seen in bacteria, which is a sequence of genes on the mRNA molecule. Lac operon is involved in the digestion of lactose in bacteria.
Explanation:
This is a operon which is switched on when substrate i.e. Lactose is available for digestion. Lac operon produces substances like Beta lactase etc which leads to lactose digestion. But if Lac I is mutated, and lost its function, then the regulatory effect of lac operon is gone. That means cell will produce enzymes to digest lactose even if lactose is absent in the media.
