How does artificial selection (controlled by a breeder) compare to natural selection? It usually occurs at the same pace because mutations occur at the same rate. It works equally well, because both principles use the idea of hereditary traits to pass along variation to offspring. It usually is less efficient because there is no competition between individuals. It works well, but, unlike natural selection, will only be able to produce a range of phenotypes based on the initial variation seen within the initial population. It usually is more efficient because it is controlled through breeding and not reproductive success.