Transcription and Regulation
Transcription of each set of rRNA genes by RNA polymerasel produces

a single 18S rRNA precursor molecule
a single 45S rRNA precursor molecule
a single 28S rRNA precursor molecule
a single 5S rRNA precursor molecule

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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?

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

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