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2 marksGenetic Concepts

CSEC Biology · May/June 2006 · Paper 2 · Question 5(b)(ii)

Coat colour is an example of phenotype.

How is the phenotype of an organism determined?

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  1. 5(a)(i)Parents (P₁) represent pure-breeding dogs for coat colour. In the space provided below, use appropriate symbols to represent the coat colour for both parents…[3 marks]
  2. 5(a)(ii)Using appropriate stripes, complete the diagrams of the F₂ generation in Figure 6, to show the coat colours of the offspring when the F₁ generation interbreed.[4 marks]
  3. 5(b)(i)Explain the meaning of the term 'phenotype'.[2 marks]
  4. 5(c)(i)Why is genetic variation important?[2 marks]
  5. 5(c)(ii)Explain why this practice may be considered risky.[2 marks]

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