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Last Answer: "Never! When would it be positive? It's a DEFORMATION!!!"


That's incorrect. Without mutations, evolution could never occur. For example:


Imagine a bird with a very small mouth. The seeds it eats are very large, and many birds die of starvation. Because of a mutation, one bird's mouth is larger than any other's, and it ends up surviving, passing on that "deformed" gene to its offspring who also survive because of their large mouths.


That is just one example of how a mutation can lead to positive evolutionary changes.

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15y ago

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