Cambridge IGCSE Biology (0610) - IGCSE Biology - Selection (18.3)

🎓 IGCSE Biology - The Complete Course: https://www.tes.com/teaching-resource/resource-12989155 IGCSE Chemistry - The Complete Course: 🎓 Complete Teaching Resource (including past exam questions and mark schemes organised by chapter): https://www.tes.com/teaching-resource/resource-13280954 🎓 Student resource (PDF only): https://www.tes.com/teaching-resource/resource-13245244 🎓 All the videos (the complete library on Patreon): https://www.patreon.com/igbiocomplete ☕️ Buy me a coffee - https://www.buymeacoffee.com/ArthurJohnParker Cambridge IGCSE Biology (0610/0970) Chapter 18 - Variation and selection Topic 18.3 - Selection For exams from 2025 (core and extended) As always this video follows the Cambridge syllabus exactly and contains absolutely everything you need to know for your final exam! My other channels: @igpecomplete - Cambridge IGCSE PE @ocrpecomplete - OCR GCSE PE Timestamps: 0:00 Contents 0:40 Natural selection 2:15 Artificial selection 3:21 Adaptation (extended) 4:03 Natural vs artificial selection (extended) Core content: - Describe natural selection with reference to; (a) genetic variation within populations, (b) production of many offspring, (c) struggle for survival, including competition for resources, (d) a greater chance of reproduction by individuals that are better adapted to the environment than others, (e) these individuals pass on their alleles to the next generation. - Describe selective breeding with reference to; (a) selection by humans of individuals with desirable features, (b) crossing these individuals to produce the next generation, (c) selection of offspring showing the desirable features. - Outline how selective breeding by artificial selection is carried out over many generations to improve crop plants and domesticated animals and apply this to given contexts. Extended content: - Describe adaptation as the process, resulting from natural selection, by which populations become more suited to their environment over many generations. - Describe the development of strains of antibiotic resistant bacteria as an example of natural selection. - Outline the differences between natural and artificial selection.