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A-LevelBiologySelection and evolutionMay/June 2025Paper 4 Q26 Marks

When organisms reproduce, they pass on their alleles to the next generation. There are many factors that can affect how allele frequencies change over time in a population.

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The correct answer is . This question tests the candidate's understanding of selection and evolution within the Biologysyllabus. The examiner's mark scheme requires...

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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

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About This A-Level Biology Question

This structured question appeared in the Cambridge A-Level Biology (9700) May/June 2025 examination, Paper 4 Variant 2. It tests the topic of Selection and evolution and is worth 6 marks.

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