title: Coding DNA sequences: statistical distributions.
abstract: The base distributions in coding DNA sequences (CDS) are investigated. We explore the scaling properties of the 4-dimensional directed random walk and compare them with that for the DNA sequences. Inference from these observation are, however, contradicted by alternate analysis using factorial moments. To resolve this conflict we look directly at the nucleotide base distributions. In all the cases the base distributions change from gaussian to non-gaussian as the scale size is increased. The CDS, therefore, have nucleotide distributions different from the random.
authors.affiliation: Department of Theoretical Physics, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India. tpas@mahendra.iacs.res.in
authors.forename: A
authors.initials: A
authors.lastname: Som
authors.forename: S
authors.initials: S
authors.lastname: Sahoo
authors.forename: J
authors.initials: J
authors.lastname: Chakrabarti
mesh_terms: D000818:Animals; D004247:DNA / Q000235:genetics*; D006801:Humans; D008957:Models, Genetic; D015233:Models, Statistical; D013045:Species Specificity; D016008:Statistical Distributions
chemical_list: D004247:DNA