Suzuki, Daichi and Hayato, Saigo
(2025)
A Category-theoretic Interpretation of the Homology Concept in Biology.
[Preprint]
Abstract
Homology is a fundamental but controversial concept in biology, referring to the sameness of biological characters across organisms. Despite its crucial role, its ontological nature has been a subject of intense debate, with a dichotomy between individualist and natural kind views. This study proposes a category-theoretic framework to reconcile these views by emphasizing the processual nature of homology. We first review major philosophical views of homology with their respective advantages and disadvantages. Next, we highlight the dynamic and evolving nature of homologs through two thought experiments. Through mathematical formulation, we then show that the individualist and natural kind views represent ordered set- and groupoid-like aspects, derived from a primary category-theoretical model based on a process-first dynamic view of homology. Our model covers a
wide range of phenomena linked with homology, such as atavism, deep homology, and developmental system drift (DSD). Furthermore, it provides a unified perspective on the ontological nature of homology, overcoming the longstanding dichotomy between individuals and kinds in Western philosophy.
Monthly Views for the past 3 years
Monthly Downloads for the past 3 years
Plum Analytics
Actions (login required)
 |
View Item |
![[img]](https://philsci-archive.pitt.edu/style/images/fileicons/text.png)
![[feed]](http://philsci-archive.pitt.edu/style/images/feed-icon-32x32.png){kind=icon}