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We present a new framework for two-sex demographic models that implements and extends the birth-matrix mating-rule approach of Pollak. The model is a continuous-time matrix model that explicitly includes the processes of mating which is nonlinear but homogeneous , offspring production, and demographic transitions and survival. The resulting nonlinear model converges to exponential growth with an equilibrium population composition. The model can incorporate age- or stage-structured life histories and flexible mating functions. As an example, we apply the model to analyze the effects of mating strategies polygamy or monogamy, and mated unions composed of males and females, of variable duration on the response to sex-biased harvesting. The combination of demographic complexity with the interaction of the sexes can have major population dynamic effects and can change the outcome of evolution on sex-related characters. In reality, both these assumptions are frequently violated.Kinsey condemned sexual repression, affirmed that uninhibited sex was good, and rejected all forms of sexual control or abstinence. He wrote that man as a. The Matrix Reloaded - Sex scene. Brandan. Loading Unsubscribe from Brandan? Cancel Unsubscribe. Working SubscribeSubscribed. The first step in this process was to develop an appropriate set of beginning migration matrices consisting of annual State-to-State migration rates by age, sex ...the end of the story look at the video above ↑ ↑ ↑
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