This is, of course, no reversal of dominance in ontogeny, but mere ontogenesis of pigmentation.
In studying heredity our attention must often be focused on the ontogenesis of the different characters, and we are sometimes inclined to regard the adult character as the product of the course of ontogenesis.
Either ontogenesis is a brief compendium of phylogenesis or it is not.
In this ontogenesis two totally different forms appear successively--the simple astrolarva and the elaborately organized and sexually mature astrozoon.
Ontogenesis is a brief and rapid recapitulation of phylogenesis, determined by the physiological functions of heredity and adaptation.
There has been no dearth of attacks--often violent attacks--on my conception of an intimate causal connection between ontogenesis and phylogenesis; but no other satisfactory explanation of these important phenomena has yet been offered to us.
Even in those higher animals, in the ontogenesis of which the original Gastrula form has disappeared, according to the laws of abbreviated inheritance (vol.
In exactly the same manner the Morula, in the ontogenesis of lower animals, still changes into a ciliated form of larva, which has been known, since the year 1847, under the name of Planula.
These facts of ontogenesis are the indestructible foundations upon which the monistic philosophy of future times will erect its imperishable system.
This resemblance is so close in the main features that we have only to repeat what we have already said of the ontogenesis of the Amphioxus.
That it once existed is proved with certainty by the gastrula, which we find temporarily in the ontogenesis of all the Metazoa (Figure 1.
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?
Ontogenesis may be considered as a repetition of phylogenesis insofar as the latter has not been varied by a more recent experience.
This last ontogenesis exhibits the phenomena of variation, of reversion, of the predominance of the one or the other parent, etc.
This typical ontogenesis and structure of the sensilla of all the vertebrates is only explained by heredity from a common ancestor.
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.
Causal Connection and Parallelism of Ontogenesis and Phylogenesis, that is of the Development of Individuals and Tribes.
Causal Connection and Parallelism of Ontogenesis and Phylogenesis, that is, of the Development of Individuals and Tribes.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "ontogenesis" in a variety of sentences. We hope that you will now be able to make sentences using this word.
