[Phosphoglycolate phosphatase (PGP. E. C. 3..3.18) polymorphism in Magadan inhabitants]

PGP phenotype and gene frequency distribution in 457 Russians and 33 Chuckchies is presented. Gene frequencies are: PGP1-0.887 and 0.970; PGP2-0.101 and 0.030; PGP3-0.030 and 0.000, correspondingly. It is shown that frequency of heterozygotes decreases in healthy Russians with increase of duration of dwelling under the North conditions. Such a dynamics causes approaching of PGP phenotype distribution of "long-livers" of the North to that of aboriginal population and moving away from European distribution type.