title: [Ratio of the phenotype frequencies of ABO blood groups in Nivkhi in various age groups].
abstract: The different degree of the select stress over the blood groups ABO is expressed by the change of their ratio in the eldest generations and by the differential fertility. These two factors support constant ratio of the phenotypes in the total population of nivkhes of the Lower Amur and Sakhalin.
mesh_terms: D000017:ABO Blood-Group System / Q000235:genetics*; D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D044466:Asian People; D002648:Child; D005260:Female; D005298:Fertility; D005787:Gene Frequency; D005828:Genetics, Population; D006801:Humans; D008297:Male; D008875:Middle Aged; D010641:Phenotype; D012800:Siberia
chemical_list: D000017:ABO Blood-Group System
vernacular_title: Sootnoshenie chastot fenotipov grupp krovi ABO u nivkhov raznykh vozrastnykh grupp.