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===Extra Information===
{{#ev:youtube|https://www.youtube.com/watch?v=TJopmhp0VdE}}
===References===
====AQA====
:[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']