GCSE Genetics and Evolution

This detailed revision resource covers the Genetics and Evolution topic from the AQA GCSE Combined Science Biology specification. Designed as a comprehension‑style activity, it provides clear and accessible revision notes followed by 15 exam‑style questions (2–6 marks) with a full mark scheme included.

Topics covered:

Fossils, fossil formation and evidence they provide for evolution
Reasons for gaps in the fossil record and how this affects scientific understanding
Causes of extinction including environmental change, invasive species and catastrophic events
Antibiotic resistance, natural selection in bacteria and MRSA
Classification systems including Linnaean hierarchy, binomial naming and the three‑domain model
Evolutionary trees, interpreting relationships and using DNA evidence
Case studies linking fossil evidence, environmental change and extinction events

What’s included:

A comprehensive Word document with structured revision notes, explanations and exam‑style comprehension questions
A separate Word document containing a complete mark scheme with model answers and clear mark allocations
A glossary of key scientific terms to support understanding and accessibility

Perfect for:

GCSE Combined Science Biology (suitable for both Foundation and Higher students)
Revision lessons, homework, intervention sessions or retrieval practice
Pre‑assessment preparation and independent learning