Question

how coevolution could cause extreme and rapid evolution in both parties?

Answer 1

Coevolution means two organisms are evolving together. The evolution of one organism is dependent upon the evolution of other organism.

Lets consider the evolution of single organism only. Suppose the rate of evolution of this organism is x. But if this organism shows an obligate relationship with another organism whose rate of evolution is also x, than the rate evolution of both of them will become x + x = 2x. The rate of evolution will increase of both of them.

The rate of evolution will increase because the two organisms are closely related to one another. Even a single change in one organism will cause the other organism to also change. This is because if the two organisms will not coevolve or will not change simultaneously in accordance with each other, then the relationship will be disrupted and eventually both of them will get extinct.

Therefore it is very important for the two organisms to evolve simultaneously with one another and dad to rapidly. This will not occur then they both will go into extinction.

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