Nom du corpus

Corpus Systématique Animale

Titre du document

DNA reassociation kinetics in relation to genome size in four amphibian species

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Batraciens_v2b_00367
Auteur(s)
  • Cosima T. Baldari 1
  • Francesco Amaldi 1
Affiliation(s)
  • 1) Centro di Studi per gli Acidi Nucleici, C.N.R., Istituto di Fisiologia Generale, Università di Roma, Città Universitaria, 00100, Roma, Italy
Résumé

DNA reassociation kinetics were studied, by means of the hydroxyapatite chromatography method, for four species of Amphibians with different nuclear DNA content: Xenopus laevis (3 pg DNA per haploid genome) and Bufo bufo (7 pg) of the Anura subclass and Trituras cristatus (23 pg) and Necturus maculosus (52 pg) of the Urodela subclass. Within each subclass the two species studied were found to have about the same absolute amount of unique DNA. The differences of total nuclear DNA can be accounted for by quantitative variations of the repetitive sequence classes, at least in part due to changes in the number of copies of the various sequences. On the contrary the great difference in nuclear DNA between the two subclasses, Anura and Urodela, involves all sequence classes in parallel; the slowly reassociating fraction appears to be unique in spite of a tenfold difference in absolute amount. The dependence of reassociation kinetics on DNA fragment length for the four species indicates for all of them an interspersed organization of the various sequence classes.

Catégories Science-Metrix
  • 1 - health sciences
  • 2 - biomedical research
  • 3 - developmental biology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - vertebres: systeme digestif
Catégories Scopus
  • 1 - Health Sciences ; 2 - Medicine ; 3 - Genetics(clinical)
  • 1 - Life Sciences ; 2 - Biochemistry, Genetics and Molecular Biology ; 3 - Genetics
Catégories WoS
  • 1 - science ; 2 - genetics & heredity
  • 1 - science ; 2 - biochemistry & molecular biology
Identifiant ISTEX
61FEBFF07CC74E3AF9B897B5D5AE594DC9A94A33
Revue

Chromosoma

Année de publication
1976
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
7.216
Sous-corpus
  • Batraciens
Type de publication
Journal
ark:/67375/1BB-5B5H6XW9-K
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