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4 marksDiseases

CSEC Biology · May/June 2016 · Paper 2 · Question 6(a)

State TWO causes of anaemia and describe TWO signs/symptoms of the disease.

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Other parts of this question

  1. 6(b)(i)State what is meant by EACH of the following terms: Homozygous, Heterozygous.[2 marks]
  2. 6(b)(ii)With the aid of a genetic diagram, show how a man and a woman who do NOT have sickle-cell anaemia can have a child who has the disease.[6 marks]
  3. 6(b)(iii)Explain why the sickle-cell allele is more common in the population, in countries where the severe form of malaria is present.[3 marks]

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