[The genetic monitoring of populations of brown frogs inhabiting radionuclide-contaminated regions of the Republic of Byelarus].

Genetic monitoring of brown frog populations inhabiting radiocontaminated areas of Belarus (contamination range: 177-2331 kBq/m2 for 137Cs; 3.7-284 kBq/m2 for 90Sr) has shown that the frequency of aberrant metaphases in bone marrow cells of animals from the contaminated areas is 3 to 10 times as much as that of the control, aberration load of cells being also higher. The aberration spectrum differs from a spontaneous one. There is no strict dependence of the yield of cytogenetic damages on the contamination.