Transcription and Regulation
Multiple copies of 5S genes, located at a chromosomal site distinct from the other rRNA genes

are transcribed by rRNA polymerase I and the 5S rRNA
are transcribed by rRNA polymerase III and the 5S rRNA
are transcribed by rRNA polymerase II
are transcribed by DNA polymerase I

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

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