Biology 9700 · AS & A Level · Proteins

Proteins — practice question

The part of the polypeptide that codes for the haemoglobin $\beta$-chain contains the following amino acids. - Pro - Glu - Glu - In patients with sickle cell anaemia, the $\beta$-polypeptide chains are mutated. The corresponding part of the mutated polypeptide contains the following amino acids. - Pro - Val - Glu - The table gives the possible anticodons for Val. What is the matching DNA triplet code for the substituted amino acid in the mutated polypeptide?

  • A$\text{GTT}$
  • B$\text{GAC}$
  • C$\text{CTC}$
  • D$\text{CAT}$

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI