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Evolution: artificial selection and domestication

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Figure 2
Figure 2a: Copyright © Inga Spence/FLPA; Figure 2b, c, e: Copyright © Caroline Pond; Figure 2d: Copyright © Arco Images/Alamy
Figure 2 Drooping ears in domesticated mammals. (a) Zebu cow; (b) pig; (c) sheep from Jordan; (d) lop-eared rabbit (with prick-eared companion); (e) guinea pig. Although some of these varieties are not commonly seen in Britain, all except rabbits are ancient breeds, long established for the production of meat, milk and/or wool

 2.2 Size and shape