Translation: Initiation, Elongation, Termination · Zoology

Which RNA molecule brings amino acids to the ribosome?

  1. Poly-A tail at the 3' end
  2. Shine-Dalgarno sequence
  3. The start codon directly, without upstream help
  4. The termination codon region
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Correct answer: Shine-Dalgarno sequence

The Shine-Dalgarno sequence aligns the mRNA with the ribosome by base-pairing with 16S rRNA in the small subunit. This ensures correct positioning of the start codon at the P site.

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