The homeostatic model of aging formalizing the concept of oxidative damage to the body was pro posed in 2001. This formalization led to extensive opportunities for using the model to analyze reproduction and longevity of living organisms. Currently, the simulationof life processes in fruit flies gives much attention to the distribution of resources, taking into account the action of genetic noise. As a result, there is heteroge neity of individual reproduction, in which unbalanced allocation of resources ends with the death from repro ductive overload. This paper considers a model of the mechanism of stochasticity of individual reproduction and the possibility of its use to assess the maximally tolerated changes in the external environment.