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Cambridge AS & A Level Biology

17.3Evolution

Evolution in Cambridge AS & A Level Biology: what the syllabus expects you to know, the learning objectives and how to practise.
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Learning objectives

What the syllabus expects you to be able to do.

  1. 17.3.1Outline evolution as the formation of new species through changes in gene pools over generations.
  2. 17.3.2Discuss how DNA sequence data show evolutionary relationships.
  3. 17.3.3Explain allopatric and sympatric speciation through genetic isolation.

Lessons

  • Evolution and the formation of new species

    40 min

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Sample question

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Evolution: sample question

1 mark

In allopatric speciation, what is the role of the geographical barrier?

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