O-LevelBiologyGenetics & Variation5090/11 · May/June 2025 · Q361 Mark

Which row identifies the factors causing continuous and discontinuous variation?

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Aboth the environment and the genes, both the environment and the genes

Bthe environment only, both the environment and the genes

Cthe genes only, the environment only

Dboth the environment and the genes, the genes only

✓ Correct answer

D: both the environment and the genes, the genes only

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Topic: Genetics & Variation, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2025 Paper 1 Variant 1, question 36.

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