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Explain Lamarck's idea about how animals change through use and disuse?
Wiki User
∙ 14y ago
If an animal uses something they will keep that trait if not, it will die out. For instance, the giraffe's long neck was required for survival therefore they kept the trait (their ancestor's had shorter necks, which Lamarck explained was because they inherited traits gained by their parents "who had to increasingly stretch their necks for food"--this theory was incorrect). In the first snakes, which were basically lizards because they had legs, they no longer need the legs so they lost them.
Wiki User
∙ 14y ago
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