人血液型ノ遺傳學術的研究 續編 人血液型遺傳ニ關スル私ノ新説增訂

The author published in his present investigation of the heredity of the human blood group types, Part II, his own theory. The hypothesis he then propounded required as a matter of course a supplementary hypothesis, which, however, was left unstated; hence it may be here supplemented. The supplementary hypothesis in question is the theory of the “Lethal Factor” put forward by Dyke & Budge. The gamete AB is weak in vitality, and, moreover, some phenomenon yet unexplained today takes place in the perion in which a blood type is formed. From these facts it is assumed that the gamete AB perishes in one generation. This assumption also corresponds to the instances reported by Fujitaka and Ito.

原著