Abstract

Summary By means of a complex algorithmic simulation model GENIP, representing a genetic net with strong non linear feedbacks the dynamic behaviour and effects of deterministic and stochastic environmental factors, acting on subprocesses of molecular genetic information processing (signal generation destruction modification) were analyzed, A stochastic variant of GENIP is represented and predictions of deterministic and stochastic environmental effects on the qualitative type of development of a real object are done. If some essential signal processes are influenced by such environmental conditions, which lead to strong stochastic deviations from the normal process rates, it is shown that inspite of a stochasti-city of 6=43,5 % for each of the essential signal processes no qualitative deviations from the behaviour of the non disturbed system may be observed, i,e. the global stability of the system was not affected. This types of stochastic modelling seems to be a fruitfull tool to investigate the stability of complex systems. High speed computers are needed for realization of the number of runs needed for statistical evaluations.

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