A mathematical model for the dynamics of primitive biological macromolecules was pro-posed and further developed by redefining the logistic equations as follows:N_m, the copynumber of a kind of biological macromolecule in primitive environment at time t;r_m,the in-trinsic replicating capacity(rate) of the macromolecule;K_m,The carrying capacity(resourcelimit)of the primitive environment;the instantaneous rate of increase in copy number of the primitive biological macromolecule;β_(12)andβ_(21),competition coef...