5.1 The genetic code and cell function
You should be prepared to discuss...
(a) The two major functions of DNA: replication and protein synthesis. The semi-conservative replication of DNA catalysed by DNA polymerase. Evidence from Meselson and Stahl experiment. The genetic code. The triplet code for amino acids.
(b) The transcription of DNA to produce messenger RNA. Translation by ribosomes and transfer RNA, which has an anticodon and a specific amino acid binding site, to synthesize proteins (other details of the structure of tRNA not required). 'One gene - one polypeptide' hypothesis. Polypeptides may be further modified and combined.
(c) Main stages of meiosis (names of subdivisions of prophase 1 not required). Cytokinesis in animal cells.
(b) The transcription of DNA to produce messenger RNA. Translation by ribosomes and transfer RNA, which has an anticodon and a specific amino acid binding site, to synthesize proteins (other details of the structure of tRNA not required). 'One gene - one polypeptide' hypothesis. Polypeptides may be further modified and combined.
(c) Main stages of meiosis (names of subdivisions of prophase 1 not required). Cytokinesis in animal cells.
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