Skip to content

Course home

6.1.5 DNA structure
x

DNA is a double helix

DNA is a double helix

DNA double helix showing sugar-phosphate backbones, inward-facing base pairs, and the three parts of a nucleotide

DNA is a polymer made from many repeating units called nucleotides. It has two strands twisted around each other into a spiral shape called a double helix.

6.1.5 DNA structure Lesson

  1. GCSE
  2. /Biology
  3. /6.1.5 DNA structure

Step-by-step lessons covering AQA GCSE Biology 6.1.5 DNA structure for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Start with the foundational topics and build up to the higher-tier material.