Abstract
Analysis of the population-genetic consequences of technogenic catastrophes, e.g., Chernobyl, represents special interest in connection with development of global ecological changes and rising technogenic contamination. Research of dynamics of cytogenetic anomalies in bone marrow cells of different Rodentia species (trapped in alienation zone near Chernobyl’s NPP in 1994–2001 in places with different levels of contamination from 5 up to 1000 Ci/km2) and in peripheral blood cells of cattle generations of experimental herd (Pripjat, 200 Ci/km2) was carried out. The changes of genetic structure in cattle generations were analyzed employing family analysis of allele’s transfer in structural genes and ISSR-PCR markers. Increase in number of mutant animals was not observed, but reversal of genetic structure in cattle generations from an initial breed to ones, typical for more primitive breed was revealed. Our results indicate that ionizing radiation does not induce new genetic anomalies but allows realization of inherently unstable species- and individual-specific genetic characteristics.
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