7. Classification

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Dr Alex Lathbridge guides you through the most important GCSE Biology facts, with a few jokes thrown in too. In this seventh episode of our series all about Inheritance, variation, and evolution, Dr Alex Lathbridge breaks down how organisms are classified. There are three different classification systems: the Linnean System, the Three-Domain System and the Binomial System. Dr Alex also looks at evolutionary trees, which use DNA to show how organisms are related genetically. Take a look on the BBC Bitesize website to find out more about this topic, with revision notes, quizzes and exam-style questions: https://www.bbc.co.uk/bitesize/guides/zqhcsrd/revision/1 Suitable for: Combined science AQA Synergy AQA Trilogy Eduqas Edexcel OCR 21st Century OCR Gateway Single science AQA Eduqas Edexcel OCR 21st Century OCR Gateway