Transcription and Regulation
Immediately after transcription

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

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

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