It would not be knowledge of selection or of spontaneous variation, terms which are mere verbal bridges over the gaps in that knowledge, and mark the lacunae and unsolved problems of the science.
A spontaneous variation might be a mere madness or mutilation or monstrosity; in finding the variation admirable we evidently invoke some principle of order to which it conforms.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "spontaneous variation" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
