Q. 174.7( 3 Votes )

Which of the foll A. They only increase expression

B. They only decrease expression

C. They interact with RNA polymerase but do not affect the expression

D. They can act both as activators and as repressors

Answer :

Regulatory proteins in transcription in prokaryotes act as both activator and repressor. Activator increases the transcription of a gene when an external stimulus is applied and Repressors prevent the transcription of a gene when an external stimulus is applied.

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