所謂る味盲現象に就いて 其後の結果竝にその遺傳について

抄録

The hereditary nature of the so-called ‘Taste Blindness’ referring to the lack of taste reaction for P. T. C. was treated by some investigators as almost granted, but the fact, it seems to the present writer, has not been well founded. From many actual cases collected by the author in his extended studies on the problem carried on with Japanese and with Formosans some typical examples of the pedigree providing the inheritance of the subject are presented in this paper. Concrete cases and statistical results obtained show clearly that the deficiency phenomenon is the recessive trait, standing in allelomorphic relation to the sensory character of bitter taste of P. T. C. as the dominant trait in Mendelian hereditary law. Snyder's method by which the proportions of recessives is claimed to be determined mathematically was applied to the data and was compared with the actual proportion of the non-tasters. The difference in the recessives between calculated and observed was statistically insignificant. Thus the recessive nature of the phenomonon of the tastelessness was proved more precisely and seems to be established.
That the phenomenon is not the sex-linked recessive, but that it is the simple autosomal inheritance, was evidenced. This is another way in which the phenomnonon differs from the color blindness in which the inheritance is the sex-linked.