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Updated: May 11, 2026

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

Adaptive dynamics under development-based genotype-phenotype maps.

Isaac Salazar-Ciudad¹, Miquel Marín-Riera

¹Evolutionary phenomics group. Developmental Biology Program, Institute of Biotechnology, University of Helsinki, PO Box 56, FIN-00014 Helsinki, Finland. isaac.salazar@uab.cat

|May 3, 2013

Summary

This summary is machine-generated.

Developmental complexity limits natural selection

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Area of Science:

Evolutionary biology
Developmental biology
Genetics

Background:

The extent to which natural selection can optimize phenotypes remains debated.
Developmental processes may influence the limits of adaptation.
Understanding genotype-fitness maps is crucial for evolutionary studies.

Purpose of the Study:

To investigate how developmental processes impact adaptation.
To decompose the genotype-fitness map into genotype-phenotype and phenotype-fitness components.
To determine which phenotype-fitness map complexities allow for sustained adaptation.

Main Methods:

A computational model of organ development was used to create a genotype-phenotype map.
Three distinct phenotype-fitness maps were employed: 'many-traits', 'few-traits', and 'roughness'.
Evolution was simulated using mutation, drift, and the combined maps.

Main Results:

The complexity of the genotype-phenotype map significantly constrains adaptation.
Sustained adaptation was only observed with the 'roughness' and 'few-traits' phenotype-fitness maps.
The 'many-traits' map showed limited adaptive potential due to developmental complexity.

Conclusions:

Developmental processes play a critical role in shaping the adaptive landscape.
Natural selection's ability to optimize phenotypes is contingent on the structure of the phenotype-fitness map.
This study provides developmental insights into the limits of evolutionary optimization.