Biology (5090) Topic 17 · Inheritance 17.2 DNA Practise DNA structure, complementary base pairing, genes, protein production, base sequences, amino-acid sequences, and protein shape. Key TheoryLearn FirstLoading… Common MistakesAvoid TheseLoading… StrategyApply ThisLoading… Practice 1EasyLoading… Practice 2EasyLoading… Practice 3MediumLoading… Practice 4MediumLoading… Practice 5AdvancedLoading… Practice 6AdvancedLoading…