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Cambridge International A Level Biology Revision Guide

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Chapter 6: Nucleic acids and protein synthesis<br />

The experimental evidence for the process of semiconservative<br />

replication is described in Box 6.1 on<br />

page 117.<br />

DNA replication takes place when a cell is not dividing.<br />

This is in interphase in eukaryotic cells (Chapter 5).<br />

Figure 6.6 James Watson (left) and Francis Crick with their<br />

model of DNA.<br />

115<br />

Figure 6.8 Crickʼs original sketch of the structure of DNA,<br />

made in 1953.<br />

Figure 6.7 Rosalind Franklin, whose X-ray<br />

diffraction images of DNA gave important<br />

clues to its structure.

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