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Abstract
Abstract This paper argues that embryonic development is best understood through the
lens of process philosophy rather than traditional substance metaphysics. Drawing
on both contemporary developmental biology and process thought, I demonstrate how
key phenomena in embryogenesis-including morphogenesis, cellular differentiation,
and organismal integration-align naturally with process-philosophical principles.
Through critical engagement with major figures in developmental biology and philosophy
of biology, including Turing's mathematical theory of morphogenesis and autopoietic
approaches to biological organization, I show how persistent difficulties in developmental
biology stem from implicit substance-metaphysical assumptions and demonstrate how
a process framework better captures the dynamic, relational nature of development.
Furthermore, I argue that this perspective provides novel insights into emergence
in biological systems while resolving longstanding theoretical difficulties in developmental
biology. This theoretical framework has important implications for both biological
understanding and experimental practice.
The Turing, or reaction-diffusion (RD), model is one of the best-known theoretical models used to explain self-regulated pattern formation in the developing animal embryo. Although its real-world relevance was long debated, a number of compelling examples have gradually alleviated much of the skepticism surrounding the model. The RD model can generate a wide variety of spatial patterns, and mathematical studies have revealed the kinds of interactions required for each, giving this model the potential for application as an experimental working hypothesis in a wide variety of morphological phenomena. In this review, we describe the essence of this theory for experimental biologists unfamiliar with the model, using examples from experimental studies in which the RD model is effectively incorporated.
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