biogenetic law of Haeckel-Müller describes the observed ratio in nature - ontogenesis, ie personal development of every living organism, to a certain extent, it recapitulates phylogeny - the historical development of the entire group of animals to which it relates.The law formulated, as the name implies, Ernst Haeckel and F. Muller in the 60-ies of the XIX century, independently of each other, and set the discoverer of the theory is now almost impossible.
obvious that the biogenetic law was formulated immediately.Mueller and Haeckel's work preceded the creation of a theoretical framework for the law as already observed phenomena and other established laws of nature.In 1828, K. Baer formulated the so-called law of embryonic similarity.Its essence lies in the fact that the embryos of individuals belonging to the same biological type, have many similarities anatomical structure.In humans, for example, at a certain stage of development of the embryo has gill slits and tail.The characteristic distinguishing features in the morphology of the species occur only in the further course of ontogenesis.The law of embryonic similarity in many respects defined the biogenetic law: once the embryos of different organisms repeat the stage of development of other individuals, they repeat the stage of development of all types at all.
ANSevertsov was later made certain amendments to the law of Haeckel-Müller.The scientist noted that during embryogenesis, that is, the stage of embryonic development, there is similarity between the embryo and not adults.For example, gill slits at the human fetus are similar to gill slits of fish embryos, but not with established adult fish gills.
important to note that one of the most significant evidence of Darwinian evolution is considered to be directly biogenetic law.The wording of it itself alludes to its own logical connection with the teachings of Darwin.The embryo in the course of its development goes through many different stages, each of which resembles a certain stage of development of nature, celebrated from the evolutionary point of view.Thus, each more difficult for organized individual represents in his development throughout the ontogeny of nature in terms of evolution.
In psychology, there is also a biogenetic law, formulated independently of the biological.In fact, in psychology decorated stands out not the law, but expressed I. Herbart and T. Ziller idea about the similarity of the child's mind with that of humanity in general.Various scholars have tried to justify this theory with different points of view.Mr. Hall, for example, resorted directly to the Haeckel-Müller law.He said that the development of the child, including in psychological terms, is defined solely by biological preconditions and repeats the evolutionary development generally.Anyway, today the idea is not clearly proven.In psychology, so far there is no biogenetic law as such.
