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All bacterial operons exhibit negative control of transcription. True or False?

All bacterial operons exhibit negative control of transcription.

True or False?

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Answer #1

Ans) yes

In the prokaryotes genes are contiguous without any introns and they are clustered in the form of operons. Each operon has a common promoter and operator site. The regulation which is mediated by the repressor is called negative regulation. The repressor protein which is encoded by the regulatory gene which is located somewhere in the DNA binds specifically to operator site and inhibits the transcription of the operon. Example: Lac operon transcription is negatively regulated by the binding of Lac i to operator site of the lac operon.

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