biogenetic law n.
The theory that the stages in an organism's embryonic development and differentiation correspond to the stages of evolutionary development characteristic of the species. Also called Haeckel's law, law of recapitulation, recapitulation theory.
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.
Components of even greater complexity may also be distinguished, as, for instance, the biogenetic law.
Both departments become accessible to monism and a mechanico-causal explanation by means of the biogenetic law.
I have called it "the biogenetic law," and will constantly appeal to it in the course of this study.
It is here that the superficial agreement of the biogenetic law with the law of von Baer comes in.
For Gegenbaur it had a very definite evolutionary meaning—he subscribed to the evolutionary form of it, the biogenetic law.
From the side also of descriptive morphology the biogenetic law underwent a critical revision.