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Preformation of Ontogenetic Patterns

Published online by Cambridge University Press:  01 April 2022

Michael J. Katz
Affiliation:
Division of Applied Mathematics, Brown University
William Goffman
Affiliation:
School of Library Science and Department of Biometry Case, Western Reserve University

Abstract

Most patterns of an organism develop reproducibly and predictably. Thus, most biological patterns are largely predetermined by the nature of the zygote and by the nature of the surrounding world. Some ontogenetic patterns can also be considered to be preformed. Eighteenth and nineteenth century definitions of ‘preformation’ suggested that all aspects of a precursor pattern—its elements and its configuration—are preserved during development. Today, the idea of preformed configurations has been lost. To revive this lost idea, we offer the following biologically contemporary definition for preformed ontogenetic patterns: preformed patterns are those patterns with topologies that have been conserved during their ontogenies. This definition is presented in precise mathematical language, and its application is demonstrated in a system of developing, abstract patterns.

Information

Type
Research Article
Copyright
Copyright © 1981 by the Philosophy of Science Association

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