rital ties. In the Kazakh traditional system of moral values, “Zheti-ata” (literally meaning “seven generations”) is an order of distribution of origin of man’s forefathers origin. A Kazakh society required from each its male member to know his own antecedents down to seventh generation. The law forbids marriages to relatives concluded within the seven generation lines, seeing it as the way to diminishing of population through genetic diseases. Our forefathers did not conclude marital ties down to seven generations, respecting the mode of kinship. Starting from the eight’s father, a new generation would be celebrated with a new title. For this, their honourable elders, judges, and seniors would call for the members of the new family clan to share the sacrifice of a white mare and blessing for the fact of completing the seven generations and giving the command for next generation marriages. The main purpose of the article is to expose similarities in the Kazak system of kinship, family, marriage arrangements, and features of keeping the Zheti-ata tradition with those of other Turkic ethnics (Uzbek, Turkmen). This is confirmed by the findings of the contemporary medical science. Therefore, violations of kinship inheritance, values of high birth and care for purity of blood are seem to be some of the today’s problems. Dedication to the zheti Zheti-ata main principle and rules of family organization have been considered basing on historical and ethnographic accounts by Russian travellers and scientists, as well as on stories, fairy tales and love sagas by Kazakh poets and writers. The article deals with cases of inobservance of the law, various punishing measures being applied to disobeying couples, treated ruthlessly as “incestors”. Several historical examples have been brought into the focus, which, as prerequisites, caused spread in reinforcement of the Zhety-ata principle into the system of kinship.