from The Open University
Alternatively you can skip the navigation by pressing 'Enter'.
Power to the People: Episode 3: The Customer is Always RightTuesday, 1st December 2015 21:00 - BBC FourThe final episode looks at how SSE are trying to win back their customers' trust following criticism from... Read more: Power to the People: Episode 3: The Customer is Always Right
Power to the People: Episode 3: The Customer is Always RightWednesday, 2nd December 2015 02:25 - BBC Four
The Hunt: Episode 3: Hide and SeekWednesday, 2nd December 2015 02:50 - BBC Two
Catching History's Criminals: The Forensics Story: Instruments Of MurderWednesday, 2nd December 2015 23:20 - BBC Four
Ireland with Simon Reeve: Episode 2Available until Thursday, 7th January 2016 00:45
The Hunt: Episode 4: Hunger at SeaAvailable until Tuesday, 29th December 2015 17:50
Catching History's Criminals: The Forensics Story: Traces Of GuiltAvailable until Tuesday, 29th December 2015 00:00
BBC Inside Science: Astronomy Q&A, CERN and ancient genomesAvailable for over a year
Camille Parmesan - Stories of ChangeProfessor Camille Parmesan, School of Biological Sciences, Plymouth University is interviewed by... Listen now: Camille Parmesan - Stories of Change
OpenLearn Live: 30th November 2015The man who went into space and became the Cosmos; back on Earth, why do people hate... Read more: OpenLearn Live: 30th November 2015
Can renewable energy power the world?Renewable energy sources are gaining an increasing share of world energy supplies. In the next... Try: Can renewable energy power the world? now
English: skills for learningThis course is for anybody who is thinking of studying for a university degree and would like to... Try: English: skills for learning now
Evolution: artificial selection and domestication
In the 18th and 19th century evolutionary biologists, including Darwin, emphasised the...
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.
When you have completed this unit 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;
- describe experimental domestication in foxes and explain its relevance to the origin of anatomical and behavioural characteristics in modern breeds of dogs and other livestock;
- measure some anatomical changes induced by selective breeding of bulldogs during the last hundred years and use the data to assess functionality and rates of evolutionary change.
- 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 Summary
Study this free course
Enrol to access the full course, get recognition for the skills you learn and track your progress. 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 unit 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 unit in animals that you see around you.
This unit is an adapted extract from the course.
This is an extract 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: Friday, 13th May 2011
Last updated on: Friday, 31st August 2012
- 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 section.
- This site has Copy Reuse Tracking enabled - see our FAQs for more information.
If you enjoyed this, why not follow a feed to find out when we have new things like it? Choose an RSS feed from the list below. (Don't know what to do with RSS feeds?)
Remember, you can also make your own, personal feed by combining tags from around OpenLearn.