Learning objective

Explain the terms homozygous and heterozygous.

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5

Flashcards

7

Questions

Topic

Reproduction

Subtopic

Genetic inheritance

AQA GCSE BiologyInheritance, variation and evolution

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Short explanation

Explain the terms homozygous and heterozygous.. Within Reproduction, this learning objective sits inside Genetic inheritance for AQA Biology 8461. Focus on using ideas such as heterozygous, homozygous accurately in your explanation. A strong response should define the core idea, describe the relevant biological process, and connect it back to the question wording instead of giving a vague definition. When revising, students should aim to explain the science clearly, include precise biological vocabulary, and show how the process or structure links to the wider topic rather than listing isolated facts.

Key concepts

homozygousheterozygous

Why it matters

This objective helps connect Genetic inheritance to exam-style questions, flashcards, and revision notes for Reproduction.

Common mistakes

1 linked
  • Confusing homozygous with heterozygous: Clarify that homozygous means both alleles are identical (AA or aa) and heterozygous means the two alleles are different (Aa).

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