Smaller Gene Networks Allow Longer Survival in Changing Environments
Author Information
Author(s): Malcom Jacob W.
Primary Institution: Integrative Biology, University of Texas at Austin
Hypothesis
Smaller, scale-free networks permit longer persistence times in a constantly-changing environment.
Conclusion
Smaller, scale-free gene networks provide a significant advantage for population persistence in rapidly changing environments.
Supporting Evidence
- Genetic architecture interacting with the rate of environmental change accounts for 78% of the variance in trait heritability.
- Smaller networks confer an adaptive advantage that translates to longer population persistence.
- At slow rates of environmental change, populations can adapt regardless of network size.
Takeaway
This study shows that having fewer genes in a network helps populations survive better when their environment changes quickly.
Methodology
The study used simulations to analyze the effects of gene network size and environmental change on trait heritability and population persistence.
Limitations
The model simplifies reality by focusing on a single trait and ignoring pleiotropic effects.
Statistical Information
P-Value
<2.2e−16
Confidence Interval
±95% CI
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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