The biogenetic law applies just as much to the brain, the organ of mind, as to any other organ of the human body.
On its relation to Haeckel's biogenetic law, see below, p. 255.
The general application of the biogenetic law to all classes of animals and plants has been proved in my Systematische Phylogenie.
We can understand, therefore, why the biogenetic law is not so generally recognized by botanists as by zoologists.
In this point also we see the biogenetic parallelism between the two great groups of the tissue-plants and tissue-animals.
Both departments become accessible to monism and a mechanico-causal explanation by means of the biogenetic law.
Components of even greater complexity may also be distinguished, as, for instance, the biogenetic law.
It is here that the superficial agreement of the biogenetic law with the law of von Baer comes in.
I have called it "the biogenetic law," and will constantly appeal to it in the course of this study.
From the side also of descriptive morphology the biogenetic law underwent a critical revision.
biogenesis bi·o·gen·e·sis (bī'ō-jěn'ĭ-sĭs)
The principle that life originates from preexisting life and not from nonliving material.