Summary
The relative numbers of red and green cones in the human eye have been determined by an analysis of various luminosity curves. These ratios show large variations; in extreme cases one of the cones is missing (colourblindness). It is found that this ratio depends on a sex linked factor. (This was known already for colourblindness). For women the ratio proves to be the mean value of the ratios which would be caused by the two factors alone. This rule explains the wellknown heredity of colourblindness for women.
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References
Hl. de Vries, Soon to appear in Physica.
Hl. de Vries, Nature157, 736, 1946.
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G. Blet, Thesis Paris 1945.
G. H. M. Waaler, Acta Ophtalmol.5, 309, 1928.
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The summary of this paper has been given already at the Réunion d'Opticiens (Paris, Oct. 14th 1946).
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de Vries, H. The heredity of the relative numbers of red and green receptors in the human eye. Genetica 24, 199–212 (1949). https://doi.org/10.1007/BF01487206
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DOI: https://doi.org/10.1007/BF01487206