February/March 2026 Paper 22

2026 · 40 questions · 40 parts · 40 marks

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31VariationMedium1 mark
Which row shows the factors that contribute to variation in a population of animals? key ✓ = contributes towards variation ✗ = does not contribute towards variation
gamete formationrandom change in DNA base sequencerandom fertilisationrandom mating
A✓✓✓✓
B✓✗✓✓
C✗✓✓✗
D✗✓✗✓