Costa, António CardosoMachado, J. A. TenreiroQuelhas, Dulce2013-04-222013-04-2220111468-1218http://hdl.handle.net/10400.22/1453This paper analyzes DNA information using entropy and phase plane concepts. First, the DNA code is converted into a numerical format by means of histograms that capture DNA sequence length ranging from one up to ten bases. This strategy measures dynamical evolutions from 4 up to 410 signal states. The resulting histograms are analyzed using three distinct entropy formulations namely the Shannon, Rényie and Tsallis definitions. Charts of entropy versus sequence length are applied to a set of twenty four species, characterizing 486 chromosomes. The information is synthesized and visualized by adapting phase plane concepts leading to a categorical representation of chromosomes and species.engDNAChromosomeEntropyPhase planejournal article10.1016/j.nonrwa.2011.05.013