In regard to the first, I formulated the following principle thirty years ago in my first study of the gastraea theory: "Phylogenesis is the mechanical cause of ontogenesis.
Either ontogenesis is a brief compendium of phylogenesis or it is not.
When we have rightly understood these, and recognised their great importance in the formation of organisms, we can go a step further and say: Phylogenesis is the mechanical cause of ontogenesis.
There might be changes of the nature of phylogenesis going on under our own observation, and even a very few of these would be sufficient to give some show of probability.
It is probable that the sensitive and travelling leucocytes of our invertebrate ancestors have powerfully co-operated for millions of years in the phylogenesis of the advancing animal organisation.
Causal Connection of the Parallelism of Phylogenesis and of Systematic Development.
The two series of organic development, the ontogenesis of the individual and the phylogenesis of the tribe to which it belongs, stand in the closest causal connection with each other.
In this paper the "History of Creation" is treated simply as a romance, and the genealogies of phylogenesis are in his eyes "of about as much value as the pedigrees of the Homeric heroes are in the eyes of historical critics.
Why does he not labour at that hitherto quite unworked-out branch, physiogenesis, at the history of the evolution of functions, at the ontogenesis and phylogenesis of vital processes?
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "phylogenesis" in a variety of sentences. We hope that you will now be able to make sentences using this word.
