On the Agglutinogens M and N of the Ainu

[摘要] In the first study of the racial distribution of the agglutinogens M and N, Landsteiner and Levine found significant differences between whites and American Indians. However, most of the races thus far examined have a similar distribution of the factors. Table 1 shows the distribution of M and N in several parts of Japan.In 1934, Kubo and his co-workers (1) studied the distribution of M and N substances among the Ainu in the Shizunai district. The results are shown in table 2.It appears that the distribution of M and N among the Ainu differs considerably from that among the Japanese.Discussion. 1. Considering differences in distribution of the agglutinogens M and N, the races of the world may be divided into three groups. Let s and t represent the frequencies of M and N respectively; the three groups are determined as follows: ![Figure][1] [1]: pending:yes

[学科分类] 生物科学（综合）