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the claim

The additional cone in tetrachromacy corresponds to a specific distinct color wavelength

the verdict
SUPPORTED
the evidence backs this
Recorded sources
2 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 the additional cone in tetrachromacy corresponds to a specific distinct color wavelength?

Yes. Genetic and evolutionary studies of vertebrate vision confirm that individual cone photoreceptors and their underlying opsin proteins are tuned to respond to distinct regions of the light spectrum.

Verdict: SUPPORTED · 2 sources for, 0 against · Last checked

The analysis

The retrieved papers document the spectral tuning of cone opsins and how specific opsin genes correspond to distinct wavelength sensitivities across species and human phenotypes, supporting the claim without any contradictory evidence in the provided set.

Evidence for · 2
The evolutionary history and spectral tuning of vertebrate visual opsins.
2023
The study details how vertebrate visual opsins evolve spectral tuning to become sensitive to distinct wavelengths of light.
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JFD, H., NS, R., & Jr, J. R. (2023). The evolutionary history and spectral tuning of vertebrate visual opsins.. doi.org. https://doi.org/10.1016/j.ydbio.2022.10.014

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More for · 1
A two-step method for identifying photopigment opsin and <i>rhodopsin</i> gene sequences underlying human color vision phenotypes.
2020
This genetic and phenotypic analysis of human color vision phenotypes identifies specific cone opsin genes (OPN1LW, OPN1MW, OPN1SW) corresponding to distinct wavelength sensitivities.
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SR, A., MC, K., AD, B., & KA, J. (2020). A two-step method for identifying photopigment opsin and <i>rhodopsin</i> gene sequences underlying human color vision phenotypes.. europepmc.org. https://europepmc.org/article/MED/32180681

What does the evidence say?

The retrieved papers document the spectral tuning of cone opsins and how specific opsin genes correspond to distinct wavelength sensitivities across species and human phenotypes, supporting the claim without any contradictory evidence in the provided set.

Receipt History
first checked05 Aug 2026
judged → SUPPORTED · 8605 Aug 2026
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