[The phylogenetic role of ontogenies (recapitulation and morphogenesis)].
Different approaches to evolutionary interpretation of ontogenies are compared, with special emphasis on the evolutionary role of morphogenetic mechanisms (construction technologies) substantially affecting the structure of definitive forms: they largely determine the structural characteristics of organs, types of anatomical and histological systems, and specificity of symmetry of organisms and their parts. The role of cellular morphogenesis inherited from protozoic ancestors in the morphogenesis of multicellular organisms is demonstrated. Two main ways of improving morphogeneses are considered, based on epithelial morphogenesis and early determined few-celled primordial. On the one hand, the phylogenetic role of archallaxes and deviations is emphasized, these events often switching evolution to a fundamentally new direction. On the other hand, many characteristics of developmental stages are explainable by rationalization of morphogeneses and do not recapitulate ancestral forms, which should be taken into consideration in phylogenetic interpretation of embryogeneses; in particular, this applies to interpretation of axial relationships.
Mamkaev
Iu V
IuV
D000818:Animals; D000845:Annelida / Q000033:anatomy & histology / Q000166:cytology; D019521:Body Patterning / Q000502:physiology; D009024:Morphogenesis / Q000502:physiology*; D010802:Phylogeny; D014419:Turbellaria / Q000033:anatomy & histology / Q000166:cytology