Animal breeding: Quick Facts

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Thoroughbred stallion

The mouse at bottom is heterozygous with a mutant gene that gives it a spotted tail. The two mice above it are paramutated; they also have spotted tails even though they do not carry the gene for this trait.

Black Angus bull

sow and piglets

German Shepherd dog

Holstein-Friesian cow

Diagram of a DNA double helix segment showing two strands with labeled components: adenine (A), thymine (T), cytosine (C), guanine (G), phosphate groups (P), and deoxyribose sugars (S). The bases pair across the strands, and the 3' and 5' ends are indicated at each strand's termini.

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Topics

breed association closed association open association purebred studbook Herdbook heredity Livestock farming Breeding Plant breeding Cruelty to animals 7 More Domestic Animals and Their Wild Ancestors 6 Domestic Animals and Their Wild Ancestors selective breeding Working Like a Dog: 7 Animals with Jobs artificial insemination Inbreeding

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Key People

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Robert Colling

British stock raiser

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Charles Colling

British stock raiser

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Lancelot Thomas Hogben

English scientist

Portrait of John Hay Whitney wearing glasses, a suit, and a tie, looking directly at the camera.

John Hay Whitney

American sportsman and businessman

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William Woodward

American banker and racehorse owner

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Hirsch Jacobs

American racehorse trainer

Robert Bakewell.

Robert Bakewell

British agriculturalist

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Warren Wright

American horsebreeder and racehorse owner

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George D. Widener

American racehorse owner