CSEC Biology · May/June 2021 · Paper 2 · Question 6(e)
Describe two situations which may lead to the evolution of a new species.
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- 6(a)Outline Darwin's theory of natural selection.[2 marks]
- 6(b)Explain why the development of antibiotic resistance by bacteria is considered to be an example of natural selection.[2 marks]
- 6(c)A farmer wishes to use artificial selection to alter the characteristics of his crops. Suggest two ways in which artificial selection will benefit the farmer.[2 marks]
- 6(d)(i)Suggest three possible reasons for the increase in tail length observed in these iguanas.[3 marks]
- 6(d)(ii)Provide an explanation to support the conclusion that the iguanas with longer tails were not a new species.[2 marks]
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