A-LevelBiologyNucleic acids and protein synthesis9700/12 · Feb/Mar 2016 · Q201 Mark

21.2% of the bases in a molecule of DNA are cytosine. What percentage would be adenine?

A21.2%

B28.8%

C42.4%

D57.6%

✓ Correct answer

B: 28.8%

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Topic: Nucleic acids and protein synthesis, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Feb/Mar 2016 Paper 1 Variant 2, question 20.

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