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6.1.8 Sex determination
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Human sex chromosomes

Human sex chromosomes

A human body cell normally contains 46 chromosomes arranged in 23 pairs. Twenty-two pairs are autosomes, which carry genes for ordinary body characteristics, while one 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 on AQA GCSE Biology 6.1.8 Sex determination. Each one builds up to exam-style questions. Start with the foundational topics and build up to the higher-tier material.

Lessons