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1.2.1 Chromosomes
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From Cell to Gene

From Cell to Gene

A eukaryotic cell containing a nucleus, with a chromosome magnified into DNA and a gene, alongside a chromosome pair inherited from the mother and father

In a eukaryotic cell, the nucleus contains thread-like structures called chromosomes. Each chromosome is one very long molecule of DNA that has been tightly coiled.

1.2.1 Chromosomes Lesson

  1. GCSE
  2. /Biology
  3. /1.2.1 Chromosomes

Step-by-step lessons on AQA GCSE Biology 1.2.1 Chromosomes. Each one builds up to exam-style questions. Start with the foundational topics and build up to the higher-tier material.