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THE GENIUS OF CHARLES DARWIN -- ILLUSTRATED SCREENPLAY & SCREENCAP GALLERY |
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In the pigeons' case, it's artificial selection.
It's human breeders using their eye to choose.
I think I'll breed from that one.
I want the beak longer or shorter.
I want the plumage to be whiter or fluffier.
So breed from the one that has the quality you want.
And then after surprisingly few generations,
you can produce a change in the breed.
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