title: [Role of various factors in determination of mono- and dizygotic twinning in man].
abstract: The multifactorial correlative analysis of the effect of certain factors influencing the appearance of either DZ or MZ twins in 259 families with known twins in them was carried out. It is shown that the probability of MZ twins birth in a family increases with mother's height growing, relations between parents getting worse and also in families where mother does physical work, while a probability of DZ twins birth depends on mother using contraceptives, increases in families with better nutrition and with father's age growing.
mesh_terms: D000428:Alcohol Drinking; D001722:Birth Order; D001827:Body Height; D001835:Body Weight; D003273:Contraceptive Devices; D005163:Factor Analysis, Statistical; D005191:Family Characteristics; D005260:Female; D006801:Humans; D008297:Male; D008423:Maternal Age; D009747:Nutritional Physiological Phenomena; D010298:Parity; D011247:Pregnancy; D012907:Smoking; D014427:Twins; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic
vernacular_title: Rol' nekotorykh faktorov v determinatsii mono- i dizigotnoĭ bliznetsovosti u cheloveka