Biology 9700 · AS & A Level · Protein synthesis

Protein synthesis — practice question

A number of the events that happen during transcription are shown. Before the mRNA molecule exits the nucleus, which events happen twice during transcription?

  • A1, 2 and 3
  • B1, 3 and 4
  • C2, 3 and 4
  • D1 and 2 only

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