CAPE Biology Unit 1 · 2008 (Rest of Region) · Paper 1 · Question Q17

Item 17 refers to the diagram below showing a segment of a strand of DNA. The base X is

1. (A)cytosine
2. (B)guanine
3. (C)uracil
4. (D)adenine

This question uses a figure or table from the paper — you'll see it when you practise.