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Behavior, archetypes and the irreversibility of evolution.

¹Center for the Health Sciences, University of California, Los Angeles 90024.

Medical Hypotheses

|October 1, 1989

Summary

Behavior, not just genes, drives animal morphological evolution. This perspective explains evolutionary trends, architectural stability, and irreversibility in animal development.

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Area of Science:

Evolutionary biology
Developmental biology
Animal morphology

Background:

Modern evolutionary theory emphasizes genetic and developmental interactions in morphological evolution.
The role of behavior as a primary driver of evolutionary change is often underrepresented.

Purpose of the Study:

To propose behavior as the fundamental cohesive factor in animal morphological evolution.
To re-evaluate key evolutionary phenomena through the lens of behavioral influence.

Main Methods:

Conceptual analysis integrating behavioral science with evolutionary theory.
Discussion of specific evolutionary phenomena (trends, architectural types, irreversibility).

Main Results:

Behavior acts as a cohesive force shaping morphological evolution.
Behavioral influence provides an alternative framework for understanding evolutionary patterns.
Explains evolutionary trends, architectural stasis, and evolutionary irreversibility.

Conclusions:

Behavior is a critical, underappreciated factor in directing morphological evolution.
A behavior-centric view offers new insights into long-standing evolutionary questions.
Revisiting evolutionary theory with behavior as a central element is crucial.

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