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Learning objective

Describe DNA as a polymer made of two strands forming a double helix.

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Topic

Reproduction

Subtopic

DNA and the genome

Aqa Gcse BiologyInheritance, variation and evolution

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Quick explanation

Describe DNA as a polymer made of two strands forming a double helix

  • This point belongs to Reproduction, especially DNA and the genome.
  • You need to be able to describe DNA as a polymer made of two strands forming a double helix.
  • The key ideas to know are double helix and DNA.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

double helixDNA

Why it matters

This objective helps connect DNA and the genome to exam-style questions, flashcards, and revision notes for Reproduction.

Quick student answer

How does dNA work?

Direct answer

In Biology, this page helps you answer questions about dNA 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 and Double helix.

Key terms

  • DNA: The genetic material in the nucleus of a cell, composed of two complementary strands that coil into a double‑helix structure.
  • Double helix: The three‑dimensional shape formed when two DNA strands wind around each other, giving DNA its characteristic twisted ladder appearance.

Common trap

Misunderstanding DNA Structure: Emphasize that DNA consists of two strands that twist around each other, forming a double helix.

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