It depends on what you mean by "selective." If you mean entirely conscious or forced breeding, then *mostly* yes (albeit primarily in the modernized world, and outside of arranged marriages and the like). If you mean selection according to evolutionary, cultural or imagined criteria relating to beauty, power, health, and/or fertility, then according to a growing number of evolutionary psychologists and geneticists, no.
Bert
Sure, we have the same biology, but there's a fair amount of
> variation. One difference between humans and agricultural plants (so
> far, at least!) is that we don't get subjected to selective breeding
> designed to differentiate and standardize individuals.