In an inducible operon, the genes are

In an inducible operon, the genes are

Options

(a) Always expressed
(b) Usually not expressed unless a signal turns them “on”
(c) Usually expressed unless a signal turns them “off”
(d) Never expressed

Correct Answer:

Usually not expressed unless a signal turns them “on”

Explanation:

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  • Lac operon is a type of inducer operon.The operon expresses its gene only in the presence of an inducer i.e Lactose it destroys the repressor proteins and now the structural genes are expressed

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