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In the 18th and 19th century evolutionary biologists, including Darwin, emphasised the similarities between natural evolution and artificial 'improvement' of livestock under domestication. They believed that studying domesticated animals and plants could illuminate the mechanisms of natural evolution. This free course, Evolution: artificial selection and domestication, provides an introduction to their work.
After studying this course, you should be able to:
- define the terms ‘artificial selection’ and ‘domestication’ and explain the relationship between artificial and natural selection
- describe some forms of dwarfism in modern breeds of dogs and explain their relationship to dwarfism in humans and in modern and extinct wild mammals
- describe some features of the skin, fur, feathers and the shape of the head frequently observed in domesticated livestock
- outline some major conclusions emerging from the sequencing of the dog genome and outline some current theories about when and where dogs were domesticated
- explain the functional basis of some of the anatomical changes induced by selective breeding of some modern dog breeds.
- Current section: Introduction
- Learning outcomes
- 1 Phenotypes and genotypes
- 2 Phenotypic change under domestication
- 3 Domesticated dogs
- 4 Experimental study of evolution and domestication
- 5 Conclusion
- Keep on learning
Study this free course
Enrol to access the full course, get recognition for the skills you learn, track your progress and on completion gain a statement of participation to demonstrate your learning to others. Make your learning visible!
Evolution: artificial selection and domestication
Most contemporary evolutionary biologists study evolution experimentally using laboratory organisms such as Drosophila or natural systems in the wild. However, 18th and 19th century evolutionary biologists, including Darwin, emphasised the similarities between natural evolution and artificial ‘ improvement’ of livestock under domestication. They believed that studying domesticated animals and plants could illuminate the mechanisms of natural evolution. Indeed, Chapter 1 of On the Origin of Species… is entitled ‘Variation under domestication’. Recent discoveries reveal the relationship between natural evolutionary mechanisms and the practical technologies used to breed plants, animals, yeasts and, these days, microbes, to produce food, clothing, transport, companionship, decoration, entertainment and most recently medicines. This course is mostly about mammals, particularly dogs and other domesticated livestock, but the basic principles are probably universal. Dogs and other livestock are so familiar that we hope that you will take the opportunity to observe the characters, habits and processes described in this course in animals that you see around you.
This OpenLearn course is an adapted extract from the Open University course :.
This free course includes adapted extracts from an Open University course which is no longer available to new students. If you found this interesting you could explore more free Natural History courses or view the range of currently available OU Natural History courses.
Copyright & revisions
Originally published: Wednesday, 2nd March 2016
Last updated on: Wednesday, 2nd March 2016
- Creative-Commons: The Open University is proud to release this free course under a Creative Commons licence. However, any third-party materials featured within it are used with permission and are not ours to give away. These materials are not subject to the Creative Commons licence. See terms and conditions. Full details can be found in the Acknowledgements and our FAQs section.
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