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Sex-ratio bias induced by mutation.

Minjae Kim1, Hyeong-Chai Jeong2, Seung Ki Baek1

  • 1Department of Physics, Pukyong National University, Busan 48513, Korea.

Physical Review. E
|April 3, 2019
PubMed
Summary

Mutation

Area of Science:

  • Evolutionary biology
  • Population genetics

Background:

  • Fisher's theory explains the 1:1 sex ratio as an evolutionarily stable state.
  • Genetic models typically assume random mating and paternal allele control of progeny sex ratio.

Purpose of the Study:

  • To investigate the subtle role of mutation in determining progeny sex ratios.
  • To explore how mutation-induced fluctuations can deviate sex ratios from the predicted 1:1.
  • To establish a systematic understanding of mutation's effect on sex ratio evolution.

Main Methods:

  • Developed a genetic model incorporating mutation's influence on sex ratio.
  • Analyzed the impact of mutation-driven fluctuations on the equilibrium sex ratio.
  • Investigated the renormalization effect of mutation on sex ratio dynamics.

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Main Results:

  • Mutation causes fluctuations that generally shift the sex ratio away from 1:1.
  • The study demonstrates a systematic effect of mutation on sex ratio determination.
  • Observed sex ratios can provide an estimate of the effective mutation rate.

Conclusions:

  • Mutation plays a critical, often overlooked, role in shaping progeny sex ratios.
  • Deviations from the 1:1 sex ratio are systematically influenced by mutation.
  • The findings offer a new method for estimating mutation rates in evolutionary studies.