A-LevelBiologyNucleic acids and protein synthesis9700/12 · May/June 2019 · Q191 Mark
Which statements about complementary base pairing are correct? 1 It allows translation to occur. 2 Purines and pyrimidines are the same size. 3 The base pairs are of equal length. 4 Uracil forms two hydrogen bonds with adenine.
A1, 2, 3 and 4
B1, 3 and 4 only
C1 and 4 only
D2 and 3 only
✓ Correct answer
B: 1, 3 and 4 only
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