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WABiologyQuick questions
Unit 3: Continuity of Species
Quick questions on Mutations and mutagens: WACE Year 12 Biology
2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are gene (point) mutations?Show answer
Point mutations affect one or a few bases within a gene.
What is effects on phenotype?Show answer
A mutation may be harmful (reducing survival), neutral (no effect, common because of the degenerate code and non-coding DNA), or rarely beneficial (improving survival in a particular environment). Whether a mutation is good or bad depends on the environment: a change that is harmful in one setting may be advantageous in another.
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