Nom du corpus

Corpus Systématique Animale

Titre du document

Length and interspersion of repetitive and non repetitive DNA sequences in four Amphibian species with different genome sizes

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_00152
Auteur(s)
  • Cosima T. Baldari 1
  • Francesco Amaldi 1
Affiliation(s)
  • 1) Centro di Studio per gli Acidi Nucleici, C.N.R., Istituto di Fisiologia Generale, Università di Roma, 00100, Roma, Italy
Résumé

The interspersion period of repetitive and unique sequences was analyzed by two different methods, electron microscopy and agarose gel electrophoresis, for four Amphibian species with different nuclear DNA content, namely the Anura Xenopus laevis (3 pg DNA per haploid genome) and Bufo bufo (7 pg) and the Urodela Triturus cristatus (23 pg) and Necturus maculosus (52 pg). Within each of the two subclasses it has been found that interspecific differences, in DNA content, due to variations in the amount of repetitive sequences, do not involve variations in length of the interspersed repetitive sequences. They remain about 380 base pairs. Furthermore, the unique sequences length has been found to be shorter in Bufo (760 base pairs) than in Xenopus (1600) and in Necturus (880) than in Triturus (1340). A study of the interspersion period has shown that the great difference in DNA content between Anura and Urodela, which had been previously shown not to have involved changes in the relative amounts of the various sequence classes, does not involve changes in the interspersion period.

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: reproduction
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
7A61B40B605708D3749420D8CFBB5C574FDB2E0C
Revue

Chromosoma

Année de publication
1977
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
7.95
Sous-corpus
  • Batraciens
Type de publication
Journal
ark:/67375/1BB-9LVH5V0D-V
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