Question

define lac operon ?​

Answer 1

The lac operon (lactose operon) is an operon required for the transport and metabolism of lactose in Escherichia coli and many other enteric bacteria. ... The gene product of lacZ is β-galactosidase which cleaves lactose, a disaccharide, into glucose and galactose.

Answer 2

Lac operon can simply be defined as an operon which is required for the transport and metabolism of lactose in E.coli and similar enteric bacteria.

Extra Information :-

• Lac operon is a transcriptionally regulated system.

• "Lac" in Lac operon refers to "lactose".

• An Operon is defined as a polycistronic structural gene which is regulated by a common promoter and regulatory genes.

• Operon like structures are very common in bacteria.

• A few examples of operon are Lac operon, Trp operon, Ara operon, His operon and Val operon.