Results for ' phylogenèse'

16 found
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  1.  23
    La symbiose du spermatozoide et de l'ovule, origine de l'ontogenese et de la phylogenese Des metazoaires.J. Costagliola - 1992 - Acta Biotheoretica 40 (2-3):253-260.
    The origin of metazoa implies the passage from an eukarote protozoan to a protozygote ancestor of a metazoan zygote. The most probable hypothesis is that of a symbiotic origin of the first zygote by association of two protists one signifying a spherical oocell and the other a flagellated spermatozoan; this could be the first step of the metazoan ontogenesis and therefore also of the phylogenesis. The genesis can also be explained by two haploid genomes NX NY, three gametes (two spermatozoa (...)
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  2.  18
    Le hasard dans la nature et son « sel » épistémologique dans les phylogenèses de l’évolution biologique.Michel Delsol - 2005 - Laval Théologique et Philosophique 61 (3):429-461.
    Nous rappelons ici les définitions et les caractères des mots et des concepts suivants : hasard, loi, finalité, ordre, déterminisme. Nous insisterons sur les relations entre ces concepts. Puis nous tenterons de bien définir le rôle du hasard dans les grands faits évolutifs : hasard et lois de l’évolution, le hasard chez Kimura, hasard et finalité apparente, hasard et libre arbitre humain. We bring together here the definitions and characteristics of the following words and concepts : chance, law, finality, order, (...)
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  3.  9
    Die ontogenese eine wiederholung der phylogenese?Paul Overhage - 1956 - Bijdragen 17 (2):162-180.
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  4.  9
    Paul Mengal , Histoire du concept de récapitulation: Ontogenèse et phylogenèse en biologie et sciences humaines. Paris: Masson, 1993. Pp. 132. ISBN 2-225-84057-1. 180 FF. [REVIEW]Peter Bowler - 1995 - British Journal for the History of Science 28 (1):116-117.
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  5. Przibram, H. - Experimental Zoologie. Iii: Phylogenese. [REVIEW]E. S. Russell - 1913 - Scientia 7 (13):114.
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  6. PRZIBRAM, H. - Experimental Zoologie. III: Phylogenese. [REVIEW]E. S. Russell - 1913 - Scientia 7 (13):114.
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  7.  20
    Function in biology.M. Jeuken - 1958 - Acta Biotheoretica 13 (1):29-46.
    In this paper we intend to propose a definition of function in biology. First we delimitated the problem and pointed out that a definition must not be related to hypotheses such as the causal connexion between form and function, phylogenetics or evolution, but that only the existence of functions is to be considered. The elements to be expressed in the definition are: the relation of function to form, the dynamic character, the integration into the activity of the total organism, the (...)
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  8.  85
    Prégnances du devenir. Simondon et les images.Emmanuel Alloa - 2015 - Critique 816:356-371.
    Problématisation, individuation, (dés)adaptation L’inventivité du vivant : la « disparation » Mouvements à vide. La spontanéité selon Simondon La prégnance des images Ontogenèse, phylogenèse, eikogenèse. L’image comme médiation .
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  9.  38
    Die ontogenese der vögel AlS evolutionsproblem.Adolf Portmann - 1935 - Acta Biotheoretica 1 (1-2):59-90.
    This paper tries to trace the different evolutional stages the egg of primitive chordates had to pass through to reach the complex state of the bird egg . It tries to ascribe to the evolutional stages the successive appearance of transitional particularities which characterise the egg and the ontogeny of birds.The different forms of individual development in birds are classified in 7 groups, proceeding from primitive to more advanced types. The type of Galliformes, especially of the Megapodidae, is shown to (...)
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  10.  16
    Artumwandlung durch umkonstruktion, umkonstruktion durch aktives reagieren der organismen.Hans Böker - 1935 - Acta Biotheoretica 1 (1-2):17-34.
    Comparative biological morphology with the study of active reaction is contrasted with Genetics as the study of passive mutation. The students of Genetics investigate anatomical characters only, never anatomical constructions, which are capable of reorganisation when the biological-morphological equilibrium of the organism has been disturbed. The biological anatomy ofOpisthocomus cristatus andStringops habroptilus shows, that three successive disturbances in the bio-morphological equilibrium are reacted to purposively by anatomical re-construction. These reactions are no accidental mutations, but are anatomical reactions, related to, and (...)
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  11.  16
    Pratique et connaissance.François Moch - 1962 - Dialectica 16 (1):45-55.
    RésuméVivre, agir, c'est participer à des répétitions qui laissent en nous une marque et finissent par nous faire acquérir une pratique. La réflexion vient ensuite, utilise ces marques, en forme des images qu'elle peut évoquer à volonté, et qu'elle structure en représentations: langage intérieur, puis langage de communication. Une « intuition » est l'affleurement conscient d'une marque laissée par la pratique, et son insertion quasi‐instantanée dans le système des représentations internes. Les progrès alternés dans la pratique, dans l'association des images, (...)
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  12.  21
    The energetic economy of the organism in animal evolution.C. Wittenberger - 1970 - Acta Biotheoretica 19 (3-4):171-185.
    The author assumes that the biological evolution must reflect itself also in the energetic processes of the organism. Several concept are discussed, in view of a characterization of the energetic economy of the organism. Two of these are thought to have particular significance related to evolution: the energetic efficiency and the capacity for energetic production . E is the ratio of the performed useful work to the amount of energy “spent”; P is the ratio of the performed useful work to (...)
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  13.  20
    Über die bedeutung Des auslesefaktors im rekapitulationsmechanismus der phylogenetisch-ontogenetischen parallele.W. Berdel & G. Nass - 1958 - Acta Biotheoretica 12 (4):195-210.
    Haeckels theory of recapitulation shall be extended by the following rule: During the ontogenetical recapitulation of the phenotypical effects, the recapitulation of the phylogenetical natural selection factors according to the genotypical potentials is a condition of manifestation. The phylogenetical natural selectionfactor produces the activation of the gen as ontogenetical manifestation-stimulus. Factor of natural selection is the one of the extern or intern environment to which has happened the adaption in the phylogenesis. Concerning the intern environments the phenotypical effect of the (...)
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  14.  27
    Le problème de la métamérie considérations générales.J. A. J. Barge - 1937 - Acta Biotheoretica 3 (3):213-220.
    The author deals with the meaning of metamerism. Two contrary points of view may serve to clear the problem. From the morphological point of view probably outgrowth of the organism in longitudinal direction has led to the development of metameres. So the first segmentation is due to a functional differentiation. In Phylogeny this segmentation has been maintained and the originally developed metameres remain the primary morphotic units of the organisms. Further specialising of function and organ-concentration destroyed the original absolute metamerism (...)
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  15.  18
    Über einen möglichen kausalzusammenhang zwischen den mechanismen der evolution und der involution in der ontogenese.W. Berdel & G. Nass - 1967 - Acta Biotheoretica 17 (3):139-150.
    Aus bekannten Versuchsergebnissen und Naturbeobachtungen lÄsst sich ein Mechanismus der ontogenetischen Evolution und Involution ableiten, der mit den unten stehenden vier GrundsÄtzen gekennzeichnet werden kann. Es wird dabei als anerkannt vorausgesetzt, dass die Entwicklung der Lebewesen auf genotypischen Potenzen beruht, die nach Einwirkung bestimmter Umweltreize bestimmte phÄnotypische Effekte bewirken. Es wird als “phylogenetischer Auslesefaktor” einer genotypischen Potenz derjenige Faktor der Äusseren oder inneren Umwelt bezeichnet, an den in der Phylogenese die Anpassung erfolgt ist. Der phylogenetische Auslesefaktor einer genotypischen Potenz wird (...)
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  16.  63
    Critics and Criticisms of the Modern Synthesis: the Viewpoint of a Philosopher.Jean Gayon - unknown
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