Titlebook: Ontogeny; P. P. G. Bateson,Peter H. Klopfer Book 1982 Springer Science+Business Media New York 1982 behavior.development.evolution.genetic

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Evolutionary Issues in Development of Behavioral Flexibility,imental and observational information in support of both hypotheses is discussed. Experimental evidence for flexibility effects is excellent, but the evolutionary status of this hypothesis is still being debated. In this article I discuss the issues and their profound implications for ethology and the social sciences.

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Preformation and Epigenesis in the Origins of the Nervous System and Behavior: Issues, Concepts, anwere too small to be seen. Thus, what appeared to be the . formation of tissues, organs, and other structures was, in fact, considered to be merely an increase in size. By contrast, proponents of epigenesis, beginning with Aristotle, held that the fertilized egg was, in fact, formless and unorganize

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Patrick R. Greenmmt.« Der Salzgehalt beeinflußt den Brechungsindex nur wenig, zumal seine Konzentration relativ gering ist und bei der Tendenz des Organismus zur Erhaltung des gleichen osmotischen Drucks Schwankungen nur innerhalb relativ enger Grenzen vorkommen. Die übrigen, im Serum vorhandenen Stoffe, wie Harnst