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 [ŏn-tŏj́ə-nē]
Dictionary.com · The American Heritage® Dictionary
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Ontogeny - Wikipedia, the free encyclopedia
Ontogeny (also ontogenesis or morphogenesis) ( ontos present participle of 'to be', genesis 'creation') describes the origin and the development of an organism from the fertilized egg to ...
en.wikipedia.org/wiki/Ontogeny |
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Recapitulation theory - Wikipedia, the free encyclopedia
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Ontogeny and Phylogeny is a rather different kind of book (it has more in common with Time's Arrow, Time's Cycle than the essays), but it still has the characteristic Gould feel to it. Many will disagree, but I feel that it is in fact the best of all Gould's books.
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Put another way, ontogeny is "...the history of maintenance of [the system's] identity through continuous autopoiesis in the physical space." (Varela, 1979a, p. 32)
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The recapitulation myth, better known as the biogenetic "law", claims that each embryo in its development passes through abbreviated stages that resemble developmental stages of its evolutionary ancestors. ... The famous evolutionist Dr. ... No buts or ifs can mitigate this fact. It is not even a tiny bit correct or correct in...
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phylogeny: (noun) the development over time of a species, genus, or group, as contrasted with the development of an individual ( ontogeny ) ... Ontogeny Recapitulates Phylogeny, also known as "Biogenetic Law" is not a "Law" of Science at all. It is only a theory.
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Although best known for the famous statement "ontogeny recapitulates phylogeny", he also coined many words commonly used by biologists today, such as phylum, phylogeny, and ecology. On the other hand, Haeckel also stated that "politics is applied biology", a quote used by Nazi propagandists.
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von Baer made observations about ontogeny and phylogeny that seem obvious to us today, but they are important in development and evolution as they run counter to recapitulation: 1) more general characters appear early in development, 2) less general forms develop from the more general forms, 3) embryos do not pass...
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