A-LevelBiologySelection and evolution9700/12 · Oct/Nov 2014 · Q371 Mark

Which explains why sickle cell anaemia has not been eradicated?

AIdentification of carriers is too difficult as they show no symptoms.

BSickle cell anaemia gives the individual some resistance against malaria.

CSickle cell anaemia is an inherited disease, so vaccination is not possible.

DThe gene responsible for sickle cell anaemia has a high rate of mutation.

✓ Correct answer

C: Sickle cell anaemia is an inherited disease, so vaccination is not possible.

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Topic: Selection and evolution, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Oct/Nov 2014 Paper 1 Variant 2, question 37.

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