explain vestigial feature
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A "vestigial structure" or "vestigial organ" is an anatomical feature or behavior that no longer seems to have a purpose in the current form of an organism of the given species. Often, these vestigial structures were organs that performed some important functions in the organism at one point in the past
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A "vestigial structure" or "vestigial organ" is an anatomical feature or behavior that no longer seems to have a purpose in the current form of an organism of the given species. Often, these vestigial structures were organs that performed some important functions in the organism at one point in the past.
However, as the population changed due to natural selection, those structures became less and less necessary until they were rendered pretty much useless. They are believed to be leftovers, only vestiges of the past.
Examples of Vestigial Structures
The animal kingdom is ripe with vestigial structures in their skeletons and bodies.
Snakes descended from lizards, with their legs growing smaller and smaller until all that was left is a small bump (leg bones buried in muscle) at the back of some of the largest snakes, such as pythons and boa constrictors.
Blind fish and salamanders who live in caves still have eye structures. One explanation, in the case of the fish, is that mutations in the genes that increase taste buds degrade the eyes.
Cockroaches have wings, though the ones on the females aren't developed enough for them to fly.
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