(a(i))[1]
Name the stage of protein synthesis shown in Fig. 1.1.
(a(ii))[3]
Identify A, B and C in Fig. 1.1.
(a(iii))[1]
State the base sequences at D and E.
(b)[4]
Mutagenesis is a process that causes a change in the amino acid sequence of proteins. Scientists use mutagenesis to investigate the importance of particular amino acids in protein structure and function. Outline how changing one amino acid in the -globin polypeptide of haemoglobin may alter the structure and function of a molecule of haemoglobin.