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the claim

One-way reproductive isolation between populations occurs in nature

the verdict
SUPPORTED
the evidence backs this
Recorded sources
6 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that one-way reproductive isolation between populations occurs in nature?

Yes. Multiple empirical studies confirm that one-way (unidirectional) reproductive isolation, such as asymmetric hybrid sterility or incompatibility, occurs naturally between divergent populations.

Verdict: SUPPORTED · 6 sources for, 0 against · Last checked

The analysis

The claim posits that one-way reproductive isolation between populations occurs in nature. This is a specific, empirical, and testable claim in evolutionary biology regarding speciation mechanisms. A large number of the retrieved papers provide direct empirical evidence of unidirectional or asymmetric reproductive isolation (e.g., papers 0, 4, 5, 6, 7, and 10), demonstrating hybrid dysfunction, sterility, or cytoplasmic incompatibilities that operate in only one direction between populations or subspecies. None of the papers refute the claim; all relevant evidence supports it. Therefore, the balance verdict is SUPPORTED.

Evidence for · 6
Gene regulation and speciation in house mice
2016
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Mack, K. L., Campbell, P., & Nachman, M. (2016). Gene regulation and speciation in house mice. doi.org. https://doi.org/10.1101/gr.195743.115

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More for · 5
Recent Speciation in Three Closely Related Sympatric Specialists: Inferences Using Multi-Locus Sequence, Post-Mating Isolation and Endosymbiont Data
2011
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Xue, H., Li, W., Nie, R., & Yang, X. (2011). Recent Speciation in Three Closely Related Sympatric Specialists: Inferences Using Multi-Locus Sequence, Post-Mating Isolation and Endosymbiont Data. doi.org. https://doi.org/10.1371/journal.pone.0027834

Patterns of genomic and allochronic strain divergence in the fall armyworm, Spodoptera frugiperda (J.E. Smith)
2022
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Tessnow, A. E., Raszick, T., Porter, P., & Sword, G. (2022). Patterns of genomic and allochronic strain divergence in the fall armyworm, Spodoptera frugiperda (J.E. Smith). doi.org. https://doi.org/10.1002/ece3.8706

Persistent postmating, prezygotic reproductive isolation between populations.
2018
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MD, G. & RR, S. (2018). Persistent postmating, prezygotic reproductive isolation between populations.. doi.org. https://doi.org/10.1002/ece3.4441

Testing the potential contribution of Wolbachia to speciation when cytoplasmic incompatibility becomes associated with host‐related reproductive isolation
2021
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Bruzzese, D. J., Schuler, H., Wolfe, T. M., Glover, M. M., Mastroni, J., Doellman, M. M., Tait, C., Yee, W., Rull, J., Aluja, M., Hood, G., Goughnour, R., Stauffer, C., Nosil, P., & Feder, J. (2021). Testing the potential contribution of Wolbachia to speciation when cytoplasmic incompatibility becomes associated with host‐related reproductive isolation. doi.org. https://doi.org/10.1111/mec.16157

Postmating Reproductive isolation between strains of Drosophila willistoni
2016
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Mardiros, X. B., Park, R. V., Clifton, B. D., Grewal, G., Khizar, A. K., Markow, T., Ranz, J., & Civetta, A. (2016). Postmating Reproductive isolation between strains of Drosophila willistoni. doi.org. https://doi.org/10.1080/19336934.2016.1197448

Receipt History
first checked04 Aug 2026
judged → SUPPORTED · 8804 Aug 2026
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