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Learning objective

Clarify that an allele is a different version of a gene.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE BiologyInheritanceCore content

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Quick explanation

Clarify that an allele is a different version of a gene

  • This point belongs to Chromosomes, genes and proteins, especially Chromosomes, genes and proteins outcomes.
  • You need to be able to clarify that an allele is a different version of a gene.
  • The key ideas to know are Define.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Define

Why it matters

This objective helps connect Chromosomes, genes and proteins outcomes to exam-style questions, flashcards, and revision notes for Chromosomes, genes and proteins.

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Practice Questions7 linked questions

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Paper 3 structured question: Chromosomes, genes and proteins

Paper 3Theory (Core)1 marks

Description

Alleles

Alleles are different versions of a gene that determine variations in inherited characteristics.

  1. a

    State what an allele is.

    Aim for approximately 1 distinct marking point.

    [1]
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