All change...
Once domesticated, sheep began to change rapidly, since their captors controlled which males mated with which females. Perhaps after noticing simple rules of inheritance, farmers began mating sheep that shared prized features like thicker wool.
By the sixth century AD, sheep were shorter, fatter, whiter and woollier than their wild ancestors. They had smaller eyes and brains, flocked together to be driven by dogs, and began to need shearing, as they no longer moulted.
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| See the jumper knitted from Dolly's wool in the Making the Modern World gallery at the Science Museum. |
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