sentences:  He did not subscribe to the belief that Darwin's concept of natural selection was as integral to the process of evolution as Darwin espoused, instead positing that evolution was not governed by the principles of Lamarck or natural selection, but rather was intrinsic to life itself.Filipchenko believed that evolution in animals and plants was an inherent developmental process rather than a change induced over successive generations, a process that an organism's environment can affect, but only indirectly.Filipchenko's investigations into genetics, craniometry, the inheritance of quantitative characters, and neurology eventually introduced him to ideas on eugenics that were being developed by his contemporaries in the United States and Europe.