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Promiscuity punishes sexual deviants.

Leif Engqvist1, Steven A Ramm2

  • 1Division of Behavioural Ecology, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland.

Molecular Ecology
|October 29, 2017
PubMed
Summary
This summary is machine-generated.

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Female promiscuity in house mice can counteract harmful genetic elements that disrupt fair inheritance during reproduction. This finding suggests that polyandry helps maintain population health by mitigating the effects of meiotic drivers.

Area of Science:

  • Evolutionary Biology
  • Genetics

Background:

  • Sexual reproduction offers genetic variability but incurs costs, primarily the transmission of only half of an individual's genes to offspring.
  • Ensuring fair meiosis is crucial for stabilizing sexual reproduction, yet selfish genetic elements called meiotic drivers can gain an unfair transmission advantage.

Discussion:

  • This study investigates the impact of polyandry (females mating with multiple males) on the effectiveness of a specific meiotic driver in house mice.
  • The research demonstrates that increased female promiscuity reduces the transmission advantage of a harmful meiotic driver.

Key Insights:

  • Polyandry in house mice effectively counteracts a specific meiotic driver, restoring fairer genetic transmission.
  • Female promiscuity can mitigate the negative effects of selfish genetic elements, thereby enhancing population viability.
Keywords:
evolutiongenetic conflictspolyandrysexual selectionsperm competition

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Outlook:

  • Further research could explore the prevalence and impact of meiotic drivers and counter-strategies across different species.
  • Understanding these genetic conflicts is vital for comprehending the evolution and maintenance of sexual reproduction.