Principle of Inheritance and VariationHard

Question

The wild type E.coli cells are growing in normal medium with glucose. They are transferred to a medium containing only lactose as sugar. Which of the following changes takws place ?

Options

A.The lac operon is repressed
B.All operons are induced
C.The lac operon is induced
D.E,coli cells stop dividing

Solution

Inducible genes are the genes which remain inactive or repressed in a cell and can be activated when a certain substrate is to be metablised. It has been when lactose is added to the medium of E.coli the operon is induced and synthesis of enzymes required for degradation lactose to glucose and galactose starts.

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