September 5, 2025Open Access

Bistable Mutation-Selection Equilibria and Violations of Fisher's Theorem in Tetraploids: Insights from Nonlinear Dynamics

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Deterministic models reveal insights into mutation-selection balance in tetraploids, suggesting deviations from Fisher's predictions.

Autotetraploids reach Hardy-Weinberg Equilibrium 33% faster than allotetraploids, showing evolutionary advantages.
The detailed modeling illustrates two bistable points for dominant alleles in tetraploids, unlike diploids that show limited bistability.
Use of ordinary differential equations and simulations allows exploration of allele dynamics and deviations from classical population genetics.
This work establishes models that enhance understanding of polyploid evolution, which is crucial for crop improvement.

Gibbon et al. (2025) studied this question.

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