Transcription and Regulation
Transcription by E. coli polymerase occurs in

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

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Transcription and Regulation
Which of the following conditions would cause the release of the lac repressor protein from the lac operator site on DNA?

Presence of lactose in the growth media
Presence of IPTG (isopropyl thiogalactoside) in the growth media
Presence of glucose in the growth media
Both (b) and (c)

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