A-LevelBiologyNucleic acids and protein synthesis9700/12 · Oct/Nov 2023 · Q231 Mark
The RNA codon wheel is a tool used to find which amino acid would be translated from an mRNA sequence. [Figure 23.1] Codon position 1 is in the centre of the wheel, codon position 2 is in the middle of the wheel and codon position 3 is near the edge of the wheel. The three letters on the outside edge of the wheel identify the amino acid. The diagram shows a section of DNA coding for one amino acid. The template strand is outlined in a box and the DNA base sequence is read in the 5' to 3' direction. [Figure 23.2] Which amino acid is coded for by this section of DNA?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
AGly
BPro
CTrp
DThr
✓ Correct answer
C: Trp
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