WJEC A2 biology student unit guide: unit BY5 environment, genetics and evolution

Perfect for revision, these guides explain the unit requirements, summarise the content and include specimen questions with graded answers.

Endorsed by WJEC, this full-colour Student Unit Guide provides ideal preparation for your unit exam:

- Feel confident you understand the unit: each guide comprehensively covers the unit content and includes topic summaries, knowledge check questions and a reference index

- Get to grips with the exam requirements: the specific skills on which you will be tested are explored and explained

- Analyse exam-style questions: graded student responses will help you focus on areas where you can improve your exam technique and performance