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Ontogeny (also ontogenesis or morphogenesis) describes the origin and the development of an organism from the fertilized egg to its mature form. Ontogeny is studied in developmental biology, developmental psychology, and developmental psychobiology.

In more general terms, ontogeny is defined as the history of structural change in a unity, which can be a cell, an organism, or a society of organisms, without the loss of the organization that allows that unity to exist (Maturana and Varela, 1987, p. 74).


See also


  • Maturana, H. R., Varela F. J. (1987). The Tree of Knowledge: The Biological Roots of Human Understanding. Boston: Shambhala Publications Inc.

External links

bg:Онтогенеза cs:Ontogenetický vývoj de:Ontogenese et:Ontogenees eo:Individugenezo id:Ontogeni lv:Ontoģenēze mk:Онтогенеза nl:Ontwikkelingsfysiologie no:Ontogenese sk:Ontogenéza sl:Ontogenija sr:Онтогенетско развиће uk:Онтогенез