Question
(F/H5) Give two factors known to increase the mutation rate.
[Crossover — 2 marks]
Mark scheme (any 2):
- Ionising radiation (UV, X-rays, gamma rays) (B1)
- Mutagenic chemicals (e.g. in tobacco smoke) (B1)
- Some viruses (B1)
2 marks · take your time before peeking.
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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.