Transcription and Regulation
Immediately after transcription

a poly adenylation signal is added
both (a) and (b)
a methylated guanine cap is added to the 31 end of the transcript
a methylated guanine cap is added to the 51 end of the transcript

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Transcription and Regulation
The major function of RNA polymerase's sigma factor is

recognition of the translational start sequence
recognition of the transcriptional stop sequence
recognition of the translational stop sequence
recognition of the transcriptional start sequence

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