What is identified as the core engine driving the evolution of symbiosis?

Answer

Coevolution.

The core engine driving symbiotic evolution is coevolution, which involves a genetic tug-of-war where genetic changes in one partner select for corresponding genetic changes in the other, creating an interdependent feedback loop.

What is identified as the core engine driving the evolution of symbiosis?
biologyevolutioninteractioncoevolutionsymbiosis