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The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm
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Cheaters divide and conquer.

Kirsten Bomblies1

  • 1Kirsten Bomblies is in the Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, United States kbomblies@oeb.harvard.edu.

Elife
|June 26, 2014
PubMed
Summary

Three selfish killer genes in fission yeast prevent reproduction with a related species. These genes drive reproductive isolation, maintaining distinct species boundaries through genetic conflict.

Area of Science:

  • Genetics
  • Evolutionary Biology
  • Microbiology

Background:

  • Reproductive isolation is crucial for speciation.
  • Gene drive mechanisms can influence evolutionary trajectories.
  • Fission yeast (Schizosaccharomyces) provides a model for studying genetic interactions.

Purpose of the Study:

  • To investigate the role of specific genes in reproductive isolation between yeast species.
  • To understand the mechanism by which 'killer genes' maintain species boundaries.
  • To explore the evolutionary implications of selfish genetic elements.

Main Methods:

  • Comparative genomics of related fission yeast species.
  • Genetic crosses and analysis of progeny.
  • Phenotypic characterization of reproductive compatibility.
Keywords:
chromosomal rearrangementsmeiotic driverecombinationspeciation

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Main Results:

  • Three specific 'killer genes' were identified in one fission yeast species.
  • These genes exhibit selfish behavior, promoting their own transmission.
  • The presence of these killer genes prevents successful reproduction with a closely related species, confirming reproductive isolation.

Conclusions:

  • Selfish killer genes can act as potent agents of reproductive isolation.
  • Genetic conflict driven by selfish genes can lead to the maintenance of distinct species.
  • This mechanism highlights a novel pathway for speciation in microorganisms.