“…A striking var iation was revealed of the frequencies of the two common alleles (EsD1 and EsD2) between different populations. The high est frequencies of the EsD2-gene were ob served in East-Asian populations [Cart wright et al, 1976;Ebeli-Struijk et al, 1976;Papiha and Nahar, 1977;Weismann et al, 1979], Several rare alleles were detected: EsD3 [Bender and Frank. 1974], EsD3N [Omoto et al, 1978], EsD3 1 [Suzuki et al, 1978], EsD4 [Berget al, 1976], EsDMa [Hitzeroth etal., 1976], EsD6[Rai7nwet al, 1980, and null alleles, EsD0 [Marks et al, 1977;Sparkes et al, 1979;Patschneider and Dirnhofer, 1979;Koziol and Stepien.…”