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

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

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Transcription and Regulation
Most transcripts of protein coding genes are cleaved

at the 5' end immediately after a poly adenylation signal
at the 3' end just before a poly adenylation signal
at the 3' end just after a poly adenylation signal
at the 5' end immediately before a poly adenylation signal

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