alleryStart learning →The nucleotide pair corresponding to the first messenger RNA nucleotide transcribed is called the:
AInitiation site
BTermination site
CAnticodon site
DRibosome site
Answer & Solution
Correct answer: A. Initiation site
1. Transcription has a numbered starting point.
2. One nucleotide pair in the DNA double helix marks where the first mRNA nucleotide is transcribed.
3. That pair is called the plus one site, or the initiation site.
4. Elongation then proceeds away from it.
_Source: OpenStax Biology 2e (CC BY 4.0), Ch 15 'Genes and Proteins', sections 15.1-15.5_
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