Transcription and Regulation
RNA polymerase holoenzyme initiates transcription which involves

recognition of the -10 sequence only
recognition of the -10 sequence and -35 sequence
None of these
recognition of the -35 sequence only

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

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