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Related Experiment Video

Updated: Aug 21, 2025

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Published on: February 3, 2023

Why the third way of evolution is necessary.

James A Shapiro¹

¹Department of Biochemistry and Molecular Biology, CGIS W123B, 979 E. 57th Street, University of Chicago, Chicago 60637 IL, USA - jsha@uchicago.edu.

Theoretical Biology Forum

|November 16, 2022

Summary

The Modern Synthesis of evolution is limited. New research shows genome restructuring via symbiogenesis and hybridization, not just natural selection, drives the origin of new species and biological complexity.

Keywords:

Hybrid Speciation Intelligent Design Creationism Macroevolution Microevolution Mobile DNA Elements Now Explanation Symbiogenesis

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Area of Science:

Evolutionary biology
Genomics
Developmental biology

Background:

The neo-Darwinian Modern Synthesis, dominant for a century, faced challenges explaining biological complexity.
Intelligent Design proponents questioned evolution's explanatory power.
The Modern Synthesis prioritized Natural Selection and gradualism, potentially overlooking other evolutionary mechanisms.

Purpose of the Study:

To highlight that contemporary evolution science extends beyond the Modern Synthesis.
To address Intelligent Design arguments by presenting a broader view of evolutionary mechanisms.
To emphasize the empirical evidence for alternative drivers of evolutionary innovation.

Main Methods:

Analysis of agricultural crop breeding data.
Review of direct observations in nature.
Integration of genomic and symbiogenetic research findings.

Main Results:

Genome restructuring through symbiogenetic cell fusions and interspecific hybridization are empirically effective in originating new life forms and species.
The Modern Synthesis overlooked the distinction between microevolution (within species) and macroevolution (origination of new taxa).
Cellular capacities for large-scale genome changes and the role of non-coding DNA and mobile elements were underestimated.

Conclusions:

Evolutionary science has progressed beyond the limitations of the Modern Synthesis.
Symbiogenesis and hybridization are key empirical drivers of macroevolutionary change.
A comprehensive understanding of genome dynamics, including non-coding regions and mobile DNA, is crucial for explaining biological complexity and countering Intelligent Design arguments.