File:Unnatural selection, 2 heads, one species.jpg

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English: Canis lupus. Each skull was photographed from the same focal distance with a fixed zoom; the images were then combined while preserving scale. The larger skull is from a wild grey wolf. The smaller is from a chihuahua. They are in fact considered the same species. The domestic dog is the product of artificial selection over many generations. Suitable example for evolution or general biology.
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Author Dmccabe

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current20:20, 12 February 2013Thumbnail for version as of 20:20, 12 February 2013873 × 607 (56 KB)Dmccabe~commonswiki (talk | contribs)User created page with UploadWizard

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