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Related Experiment Video

Updated: Jun 29, 2026

Characterizing Mutational Load and Clonal Composition of Human Blood

Characterizing Mutational Load and Clonal Composition of Human Blood

Published on: July 11, 2019

Clonal interference, multiple mutations and adaptation in large asexual populations.

Craig A Fogle¹, James L Nagle, Michael M Desai

¹Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, New Jersey 08544, USA.

|October 4, 2008

Summary

This summary is machine-generated.

Asexual populations struggle to adapt due to clonal interference and multiple mutations. Our simulation shows adaptation dynamics depend on beneficial mutation fitness effects, impacting evolutionary trajectories.

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Area of Science:

Evolutionary biology
Population genetics

Background:

Asexual populations face challenges in accumulating beneficial mutations for adaptation.
Clonal interference and multiple mutations can hinder the fixation of advantageous genetic changes.

Purpose of the Study:

To investigate the influence of clonal interference and multiple mutations on asexual adaptation.
To explore how the distribution of fitness effects impacts evolutionary dynamics.

Main Methods:

Utilizing Monte Carlo simulations to model asexual population adaptation.
Analyzing the interplay between beneficial mutation occurrence and selection.

Main Results:

Adaptation dynamics are qualitatively dependent on the shape of the fitness effect distribution.
Clonal interference adequately describes dominant mutations when fitness effects decrease slower than exponentially.
Multiple mutation analysis is more appropriate when fitness effects decrease faster than exponentially.

Conclusions:

The study elucidates the distinct regimes governing asexual adaptation based on mutation fitness distributions.
It highlights the limitations of existing models and explores complex dynamics where neither model fully applies.