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Edexcel GCSE Combined Science Topic 4 Natural Selection and Genetic Modification – Learn Guide

Course Content

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1.1 Variation and the struggle to survive

1.2 Natural selection step by step

1.3 Practice: Darwin’s theory of evolution

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2.1 How antibiotic resistance develops

2.2 Evidence for Darwin’s theory

2.3 Practice: Resistant organisms as evidence

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3.1 Fossils, Ardi and Lucy

3.2 Turkana Boy and the pattern over time

3.3 Practice: Fossil evidence for human evolution

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4.1 How stone tools developed

4.2 Dating stone tools

4.3 Practice: Stone tools as evidence

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5.1 The five kingdoms

5.2 Genetic analysis and the three domains

5.3 Practice: Five kingdoms and three domains

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6.1 How selective breeding works

6.2 Impact on food plants and animals

6.3 Practice: Selective breeding

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7.1 What is genetic engineering?

7.2 The stages of genetic engineering – Higher tier only

7.3 Practice: Genetic engineering

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8.1 Benefits and risks in agriculture

8.2 Medicine, practical and ethical issues

8.3 Practice: Benefits and risks of genetic technologies

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9.1 Mixed retrieval

9.2 Exam practice