Summary
Data on ABO blood groups of 4,464,349 Japanese individuals were collected from prefectural health departments, health centers, and Red Cross blood centers in the whole country. Phenotypic and gene frequencies for each subpopulation were calculated and tabulated.
Phenotypic frequencies in the whole sample are 29.25% O, 38.65% A, 22.15% B and 9.95% AB. Gene frequencies are estimated to be p(I A)=0.2833, q(I B)=0.1759, and r(I 0)=0.5407.
Significant gradients of the gene frequencies were apparent,i.e. theI A gene is increased andI B andI 0 genes are decreased from the northeast to the southwest.
There are a slight, but significant, decrease in group O and increases in other groups in recent years. Possible causes of these changes were discussed.
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This study was supported by the Scientific Research Grant from the Ministry of Education, Science, and Culture No. 037020 in 1975 and No. 137071 in 1976 and 1977.
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Fujita, Y., Tanimura, M. & Tanaka, K. The distribution of the ABO blood groups in Japan. Jap J Human Genet 23, 63–109 (1978). https://doi.org/10.1007/BF02001790
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DOI: https://doi.org/10.1007/BF02001790
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