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6.1.8 Sex determination
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Sex chromosomes

Sex chromosomes

Human body cells contain 23 pairs of chromosomes. Twenty-two pairs are homologous autosome pairs that control ordinary characteristics, while the final pair consists of the sex chromosomes.

6.1.8 Sex determination Lesson

  1. GCSE
  2. /Biology
  3. /6.1.8 Sex determination

Step-by-step lessons covering AQA GCSE Biology 6.1.8 Sex determination 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.