One reason for this is convergent evolution. Convergent evolution occurs when organisms that aren’t closely related evolve similar features or behaviours, often as solutions to the same problems. The ...

This is evidence that quite separate, independent episodes of molecular evolution occurred, with the same functional results. This is a dramatic example of convergent evolution, when organisms ...

locomotion, and feeding habits. This widespread evolutionary phenomenon is known as convergence.

A team of biologists in Montana and Germany has found that, regardless of type, those insects that express a protective stick- or leaf-like appearance all evolved the same basic body parts.