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3 marksNatural Selection

CAPE Biology Unit 1 · 2008 · Paper 2 · Question 5(b)(ii)

According to Darwin and Wallace the mechanism for speciation is natural selection.

Comment on the basis of this mechanism.

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Other parts of this question

  1. 5(a)(i)State ONE definition of a species in terms of breeding behaviour.[2 marks]
  2. 5(a)(ii)Discuss the limitations of defining a 'species' in terms of breeding.[6 marks]
  3. 5(b)(i)With reference to animal populations, outline the process by which a new species may arise from a previously existing one.[4 marks]

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