O-LevelBiologyGenetics & Variation5090/11 · May/June 2013 · Q401 Mark

Which statement describes an example of artificial selection?

AIt has been found that some strains of bacteria produce antibiotics.

BIt is common practice to mate bulls with cows that produce the most milk.

CIt is possible to control caterpillars on food crops by releasing small wasps which lay their eggs in caterpillars and kill them.

DMosquitoes have developed strains that are resistant to insecticides.

✓ Correct answer

B: It is common practice to mate bulls with cows that produce the most milk.

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Topic: Genetics & Variation, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2013 Paper 1 Variant 1, question 40.

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