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Learning objective

Explain gene mutation as a random alteration in the DNA base sequence.

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  • Read the explanation.
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  • Practise with linked questions.
Cambridge IGCSE BiologyVariation and selectionSupplement content

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Explain gene mutation as a random alteration in the DNA base sequence

  • This point belongs to Variation, especially Variation outcomes.
  • You need to be able to explain gene mutation as a random alteration in the DNA base sequence.
  • The key ideas to know are Describe.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Describe

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Paper 4Theory (Extended)2 marks

Description

Gene Mutation

Gene mutation involves changes in the sequence of bases in DNA that occur randomly.

  1. a

    Describe what is meant by a gene mutation?

    Aim for approximately 2 distinct marking points.

    [2]
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