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2 marksGenetic Concepts

CSEC Biology · January 2016 · Paper 2 · Question 5(b)(i)

Sickle-cell anaemia is an inherited condition in which the blood of affected persons cannot transport oxygen efficiently.

Describe TWO symptoms of sickle-cell anaemia.

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  1. 5(a)Name FOUR major components that make up human blood, and explain how the oxygen transported by the blood becomes available to cells for the production of…[8 marks]
  2. 5(b)(ii)Fazul and Shanna both carry the sickle-cell trait. What is the chance that a child born to them would suffer from sickle-cell anaemia? Explain your answer with…[5 marks]

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