2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/80421We present long Monte Carlo simulations of a simple model of biological macroevolution in which births, deaths, and mutational changes in the genome take place at the level of individual organisms. The model displays punctuated equilibria and flicker noise with a 1/f-like power spectrum, consistent with some current theories of evolutionary dynamics.3 pages RevTex4, 2 included eps figuresAdaptation and Self-Organizing SystemsStatistical MechanicsBiological PhysicsPopulations and Evolutiontext