There is no need to assume a reason for genetic variance or a particular genetic expression. The idea that evolution is directed, that each change is somehow pu

There is no need to assume a reason for genetic variance or a particular genetic expression. The idea that evolution is directed, that each change is somehow purposeful has been fairly conclusively disproven: genetic drift has been observed nearly universally. As speculative fiction your ideas are somewhat interesting. I don't know if you've ever tried your hand at a short story, but it could be a good premise.