title: [Assessment of the hereditary and environmental influence on the growth of hand bones in twin children].
abstract: Forty pairs of twins from 6 to 15 years of age were subjected to two rentgenographies of the right hand. The degree of similarity between the twins of one pair was studied by the value of the absolute and relative increase of sizes of the hand phalanges. Zygotes, sex and age of children were taken into account. The effect of hereditary factors on the growth of hand phalanges in boys is pronounced better than in girls. In the formers the degree of similarity between the twins of one pair is lower than in the latters. In 12-15 years of age such similarity is higher than in 8-11 years old twins.
mesh_terms: D000293:Adolescent; D001846:Bone Development; D002648:Child; D005260:Female; D006225:Hand / Q000254:growth & development*; D006801:Humans; D008297:Male; D011247:Pregnancy; D012737:Sex Factors; D014427:Twins; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic
vernacular_title: Otsenka nasledstvennykh i vneshnesredovykh vliianiĭ na prirost razmera kosteĭ kisti u deteĭ-bliznetsov