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Learning objective

Explain how reproductive isolation can lead to speciation.

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Topic

Genetics and ecosystems official content

Subtopic

Evolution may lead to speciation

Aqa A Level BiologyGenetics, populations, evolution and ecosystems

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Quick explanation

Explain how reproductive isolation can lead to speciation

  • This point belongs to Genetics and ecosystems official content, especially Evolution may lead to speciation.
  • You need to be able to explain how reproductive isolation can lead to speciation.
  • The key ideas to know are speciation and reproductive isolation.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

speciationreproductive isolation

Why it matters

This objective helps connect Evolution may lead to speciation to exam-style questions, flashcards, and revision notes for Genetics and ecosystems official content.

Quick student answer

Which of the following is a primary mechanism by which reproductive isolation can lead to speciation?

Direct answer

Geographic isolation occurs when populations are separated by physical barriers, preventing interbreeding.

Key terms

  • Geographic isolation: A form of reproductive isolation where physical barriers prevent populations from interbreeding.
  • Temporal isolation: A form of reproductive isolation where species breed at different times, preventing mating.

Common trap

Confusing types of isolation: Clearly define each type of isolation and provide examples to differentiate them.

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