Describe one biological process or mechanism that helps you explain how mutations can affect phenotype..

A high-scoring response should include precise scientific terminology, a clear sequence of ideas, and explicit reference to Alteration of the sequence of bases in DNA can alter the structure of proteins.

The response earns credit when it separates the named process from its effect. Here the relevant objective is Explain how mutations can affect phenotype., so the explanation must stay specific. This variation checks whether the learner can turn the approved objective into a coherent exam response with clear biological reasoning. For exam-style wording, develop the link between structure, function and consequence rather than stopping after a definition.