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The lac operon consists of...

The lac operon consists of

A

Four regulatory genes only

B

One regulatory gene and three structural genes

C

Two regulatroy genes and two structural genes

D

There regulatory genes and three structural genes.

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The correct Answer is:
D
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Assertion (A): Lactose is the substrate for the enzyme beta-galactosidase and it regulates switching on and off of the lac operon. Reason ( R): The lac operon consists of one regulatory gene and three structural genes.

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Lac operon is

The lac operon is turned on when allolactose molecules bind to

The lac operon is an example of :

In the following diagram of the lac operon, which is an operon for inducible enzymes , identify the components and enzymes.

In lac operon, lactose acts are

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