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Updated: Mar 1, 2026
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Recombineering Homologous Recombination Constructs in Drosophila
Published on: July 13, 2013
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DOES RECOMBINATION CONSTRAIN NEUTRAL DIVERGENCE AMONG BACTERIAL TAXA?
1Department of Biology, Wesleyan University, Middletown, Connecticut, 06459-0170.
Summary
This study presents a new model for neutral divergence in closely related species. It predicts that some bacterial groups, like Bacillus subtilis, are on a path to continuous, unbounded genetic divergence.
Area of Science:
- Population Genetics
- Molecular Evolution
- Bioinformatics
Background:
- Neutral divergence is key to understanding speciation.
- Predicting the long-term fate of genetic divergence in closely related taxa remains challenging.
Purpose of the Study:
- To present a novel coalescence model for predicting neutral divergence outcomes.
- To identify key population-genetic parameters influencing divergence trajectories.
Main Methods:
- Iterative simulation of feedback between sequence divergence and sexual isolation.
- Analysis of four estimable population-genetic parameters.
Main Results:
- The model demonstrates that neutral divergence can either stabilize or enter a runaway process.
- Key parameters include intrataxon diversity, recombination rates, and mutation rate.
- Bacillus subtilis and relatives show a trajectory of unbounded neutral divergence.
Conclusions:
- The developed model can forecast whether neutral divergence will reach equilibrium or proceed unbounded.
- Empirical application suggests ongoing, unbounded neutral divergence in the Bacillus subtilis group.
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