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2 marksNatural Selection

CAPE Biology Unit 1 · 2008 · Paper 2 · Question 5(a)(i)

According to the biological species concept, a species represents the lowest taxonomic group which is capable of being defined with any degree of precision. While there are several ways in which the term may be defined, most biologists define species in relation to their breeding behaviour.

State ONE definition of a species in terms of breeding behaviour.

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Other parts of this question

  1. 5(a)(ii)Discuss the limitations of defining a 'species' in terms of breeding.[6 marks]
  2. 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]
  3. 5(b)(ii)Comment on the basis of this mechanism.[3 marks]

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