Abstract
Summary1. Sex-linked type of defective colour vision among 608 unrelated students, including 251 males and 357 females belonging to different communities residing in Madhya Pradesh of India, was investigated. Males were found to have 3.19% defective colour vision; again, of the defectives the deutans were found to be exactly three times greater than the protans. Significantly, none of the females was colourblind.2. Brahmin of Madhya Pradesh displayed a comparatively low value of abnormal incidence being 2.88% among the other Brahmin samples. The occurrence of green-blind was found to be a little more than double of the red-blind in the sample, χ2 test for significance in respect of the total incidence of colour-blindness in various samples of Brahmin shows no heterogeneity (P>0.05). But, when certain Brahmin samples having a common origin are combined, some significant differences are brought out showing a clear statistical heterogeneity (P<0.02).
Publisher
Cambridge University Press (CUP)
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