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O-LevelBiologyGenetics & Variation5090/11 · May/June 2024 · Q331 Mark

The graph shows the percentage of the population with different ABO blood groups in one region. [Figure 33.1] How does the graph suggest that variation in ABO blood groups is discontinuous?

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AThere are intermediates.
BThe percentage of the population with each blood group is different.
CThere is a limited number of phenotypes.
DThere is a range of phenotypes between two extremes.

✓ Correct answer

C: There is a limited number of phenotypes.

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About this question

Topic
Genetics & Variation, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, May/June 2024 Paper 1 Variant 1, question 33.

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