UNIT OVERVIEW

This revision unit covers the four main topics from Term 1:

1. DNA: The Code of Life – How genetic information is stored, copied, and used to make proteins
2. Meiosis – The special cell division that makes sex cells (gametes)
3. Reproduction in Vertebrates – How different animals reproduce
4. Human Reproduction – The human reproductive system, hormones, and development

What you will be able to do after this revision:

• Describe DNA and RNA structure and explain how proteins are made
• Explain meiosis and why it creates genetic variation
• Compare how different vertebrates reproduce
• Describe human reproductive anatomy, hormones, and how babies develop

What you should already know:

• Grade 10: Mitosis and the cell cycle
• Grade 11: Cell structure and organelles
• Grade 9: Basic human reproductive systems

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