The examination was carried out at Vrbas - SAP Vojvodina, the place which at the beginning of 1946 was settled by 6194 Montenegrins of Niksic and its surroundings, and Niksic - SR Montenegro. These two places differ in geological, hydrographic, meteorolo-climatic characteristics, plant cover and culture-historical development. Taking the foregoing into consideration the objective of our study was to establish what the body height was like of the boys and girls aged 10-15 at Vrbas and Niksic, that is to find out, at this stage of growth and development, the influence and inter-action of genetic factors and the factors of environment on the demonstration of body height. The examination was carried out using the instruction of IBP. For the purpose of our statistical analysis, we used the data of only those school children who came from complete families and those belonging to the following groups: I Migrant Montenegrins at Vrbas. The school children and their parents were born at Vrbas, and their both grandfathers and grandmothers were born at Niksic and its surroundings; II Natives at Vrbas. The school children were born at Vrbas or its surroundings, as well as their parents and both grandfathers and grandmothers; III Native Montenegrins at Niksic. The school children were born at Niksic or its surroundings, as well as their parents and both grandfathers and grandmothers. The obtained data were worked out according to origin, age and sex. Each group consisted of 30 school children of the same age and sex. i.e. 1080 school children were analyzed. The comparison of the migrant and native populations was carried out using the two-factorial analysis of the variance, and for the individual comparison, the LSD-test. Our examination shows that the average height of the boys and girls of the migrants is greater than in the natives, and the native populations of the boys and girls do not differ between themselves. Then, we have got different time in the occurrence of the second section of the growth curves in two groups of the Montenegrins, and simultaneously in the school children living in the same environment. Different time in the occurrence of the second section of the growth curves in two groups of the Montenegrins, and the same time in the section of the curves in the school children of Vrbas point out that environmental factors play a decisive role in the demonstration of growth rate and the time of puberty occurrence in male sex.
