(a)[4]
Identify the bases P to S.
(b)[3]
Describe the function of the mRNA molecule shown in Fig. 6.1.
Biology 9700 · AS & A Level · Protein synthesis
Protein synthesis — practice question
Red blood cells develop from cells known as reticulocytes. Stem cells in the bone marrow divide to make reticulocytes, and these then differentiate into red blood cells. As differentiation occurs, haemoglobin is synthesised. Fig. 6.1 shows the arrangement of short sections of DNA and messenger RNA (mRNA) in the nucleus of a reticulocyte during transcription.