Transcription and Regulation
Transcription by E. coli polymerase occurs in

three phases known as initiation, elongation and termination
None of these
two phases known as initiation and termination
four phases known as initiation, propagation, elongation and termination

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Transcription and Regulation
What is a promoter?

A specific sequence of DNA to which a catabolic repressor binds
None of these
A specific sequence of DNA to which RNA polymerase binds
A specific DNA sequence to which a restriction endonuclease binds

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