Difference between revisions of "Selective Breeding"
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===Extra Information=== | ===Extra Information=== | ||
{{#ev:youtube|https://www.youtube.com/watch?v=TJopmhp0VdE}} | {{#ev:youtube|https://www.youtube.com/watch?v=TJopmhp0VdE}} | ||
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| + | ===References=== | ||
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| + | :[https://www.amazon.co.uk/gp/product/1471851362/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851362&linkCode=as2&tag=nrjc-21&linkId=7d78d70a2044ee9982dae010c94af92a ''Artificial selection (selective breeding), pages 48-9, GCSE Combined Science Trilogy 2, Hodder, AQA '] | ||
| + | :[https://www.amazon.co.uk/gp/product/0008158754/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158754&linkCode=as2&tag=nrjc-21&linkId=27ad53b0283feeff7fc5ae04a9e205f55 ''Artificial selection, page 279, GCSE Biology; Student Book, Collins, AQA'] | ||
Revision as of 18:49, 27 October 2019
Contents
Key Stage 4
Meaning
Selective Breeding is a process in which individuals of a species are chosen by humans for reproduction to pass on certain characteristics to their offspring.
About Selective Breeding
- Selective Breeding is what has led to the features of all cultivated plants and many domesticated animals.
- Selective Breeding causes evolution of a population.
- Selective Breeding works by selecting individuals in a species with desirable characteristics and breeding them with one another. It may also involve killing individuals with undesirable characteristics in order to prevent them from reproducing.
- Over many generations selective breeding can cause significant changes to a population.
Individuals may be selected for a number of reasons:
- A good temperament - Animals that are calm and not aggressive.
- A high yield - Individuals that produce a large amount of a desired product, eg milk, wool, fruit.
- Appearance - Individuals that are aesthetically pleasing, eg flowers, pets.
- Resistant to Disease - Individuals that are not affected by certain diseases.