title: A new way to visualize DNA's base succession: the Caenorhabditis elegans chromosome landscapes.
abstract: In the eukaryotic genomes, the genetic diseases are generally associated with the tandem repeats. These repeats seem to appear frequently. In this paper, we are describing a wavelet transform technique which provides a new way to represent the DNA succession bases as a DNA progression images. These images offer DNA landscapes, visualizing and following up periodicities through genomes. We investigated in a structural coding technique the Pnuc. Then, we illustrated, with time-frequency representation, the existence and the superposition of the periodicities in some biological features, their locations and the different ways in which they appear. The representations generated showed that one periodicity can sometimes be alone, but generally, it is incorporated to others. These periodicities associations create, in the Caenorhabditis elegans chromosome, a precise structural image of biological features, such as CeRep, Helitrons, repeats and satellites.
authors.affiliation: Laboratoire Signal, Image et Technologies de l'information, Département de Génie Electrique, Ecole Nationale d'Ingénieurs de Tunis, BP 37, Campus Universitaire, Le Belvédère, 1002, Tunis Cedex, Tunisia. Afef.Elloumi@enit.rnu.tn.
authors.forename: Afef Elloumi
authors.initials: AE
authors.lastname: Oueslati
authors.affiliation: Laboratoire Signal, Image et Technologies de l'information, Département de Génie Electrique, Ecole Nationale d'Ingénieurs de Tunis, BP 37, Campus Universitaire, Le Belvédère, 1002, Tunis Cedex, Tunisia.
authors.forename: Imen
authors.initials: I
authors.lastname: Messaoudi
authors.affiliation: Département de Génie Physique et Instrumentation, Institut National des Sciences Appliquées et de Technologie, BP 676, Centre Urbain, 1080, Tunis Cedex, Tunisia.
authors.forename: Zied
authors.initials: Z
authors.lastname: Lachiri
authors.affiliation: Laboratoire Signal, Image et Technologies de l'information, Département de Génie Electrique, Ecole Nationale d'Ingénieurs de Tunis, BP 37, Campus Universitaire, Le Belvédère, 1002, Tunis Cedex, Tunisia.
authors.forename: Noureddine
authors.initials: N
authors.lastname: Ellouze
mesh_terms: D000818:Animals; D017173:Caenorhabditis elegans / Q000502:physiology*; D002875:Chromosomes / Q000737:chemistry*; D018509:DNA, Helminth / Q000032:analysis / Q000737:chemistry; D012091:Repetitive Sequences, Nucleic Acid / Q000235:genetics*; D017422:Sequence Analysis, DNA / Q000379:methods*; D058067:Wavelet Analysis
chemical_list: D018509:DNA, Helminth
keywords: Biological features; CeRep; Helitrons; Structural-specific landscape images; Time–frequency evolution; Wavelet analysis