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Learning objective

Recall that DNA contains the four bases A, C, G and T.

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

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Topic

Reproduction

Subtopic

DNA structure (biology only)

Aqa Gcse BiologyInheritance, variation and evolution

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Quick explanation

Recall that DNA contains the four bases A, C, G and T

  • This point belongs to Reproduction, especially DNA structure (biology only).
  • You need to be able to recall that DNA contains the four bases A, C, G and T.
  • The key ideas to know are G, A, and bases.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

GAbasesCT

Why it matters

This objective helps connect DNA structure (biology only) to exam-style questions, flashcards, and revision notes for Reproduction.

Quick student answer

What should you know about dNA contains the four bases A, C, G and T?

Direct answer

In Biology, this page helps you answer questions about dNA contains the four bases A, C, G and T within Reproduction. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are DNA bases and Nucleotide.

Key terms

  • DNA bases: The four nitrogenous bases that make up DNA: adenine (A), cytosine (C), guanine (G) and thymine (T).
  • Nucleotide: The basic building block of DNA, consisting of a sugar, a phosphate group and one of the four bases (A, C, G, or T).

Common trap

Misidentifying DNA Bases: To fix this, students should create a mnemonic or visual aid to remember the bases A (adenine), C (cytosine), G (guanine), and T (thymine) and practice recalling them regularly.

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