Transcription and Regulation
In prokaryotes, transcription is

terminated by the stop codon
terminated by a protein called rho
terminated by a poly A sequence
terminated by a start codon

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Transcription and Regulation
Most transcripts of protein coding genes are cleaved

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
at the 5' end immediately after a poly adenylation signal

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