, Volume 24, Issue 1, pp 199–212 | Cite as

The heredity of the relative numbers of red and green receptors in the human eye

  • Hl. de Vries


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.


Extreme Case Relative Number Green Cone Green Receptor Linked Factor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1).
    Hl. de Vries, Soon to appear in Physica.Google Scholar
  2. 2).
    Hl. de Vries, Nature157, 736, 1946.Google Scholar
  3. 3).
    Hl. de Vries, Nature157, 804, 1946.Google Scholar
  4. 4).
    G. Blet, Thesis Paris 1945.Google Scholar
  5. 5).
    G. H. M. Waaler, Acta Ophtalmol.5, 309, 1928.Google Scholar

Copyright information

© Martinus Nijhoff 1949

Authors and Affiliations

  • Hl. de Vries
    • 1
  1. 1.Physical InstituteGovernment University GroningenHolland

Personalised recommendations