O-LevelBiologyGenetics & Variation5090/12 · May/June 2014 · Q371 Mark

What is the effect of environment on discontinuous variation, and what is an example of this type of variation in humans?

Alarge, ABO blood group system

Blarge, height

Csmall, ABO blood group system

Dsmall, height

✓ Correct answer

C: small, ABO blood group system

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Topic: Genetics & Variation, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2014 Paper 1 Variant 2, question 37.

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