2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/151568We introduce a simple model for DNA evolution. Using the method of Peng et al.$^1$, we investigate the fractal properties of the system. For small chains and chains of intermediate size we find a fractal exponent that indicates the existence of long-range correlations, as in real DNA sequences. However, when very large chains are studied the fractal exponent asymptotically converge to the value of a random sequence. We verify that the mutations are responsible for the apparent existence of long-range correlations.2 pages, plain Tex (one postscript figure available upon request)Condensed MatterAdaptation and Self-Organizing SystemsChaotic DynamicsQuantitative Biologytext