Biology 9700 · AS & A Level · Proteins

Proteins — practice question

The RNA codon wheel is a reference chart for determining which amino acid will be translated from an mRNA sequence. Codon position 1 is at the centre of the wheel, codon position 2 is in the middle of the wheel and codon position 3 is close to the outer edge. The three letters around the outside edge of the wheel show the amino acid. The diagram displays part of DNA that codes for one amino acid. The template strand is shown inside a box and the DNA base sequence is read from $5'$ to $3'$. Which amino acid is coded by this section of DNA?

  • AGly
  • BPro
  • CTrp
  • DThr

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