Nom du corpus

Corpus Systématique Animale

Titre du document

Chromosomes and sex determination in 13 araneid spiders of North-Eastern India

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Arthropodes_v2b_01423
Auteur(s)
  • S. N. Datta 1
  • K. Chatterjee 2
Affiliation(s)
  • 1) Department of Zoology, Shillong College, 793 003, Shillong, Meghalaya, India
  • 2) Department of Zoology, School of Life Sciences, North-Eastern Hill University, 793 014, Shillong, Meghalaya, India
Résumé

The diploid chromosome number of 13 species belonging to the family Araneidae (Araneae) ranges between 16 and 25. The ? sex-determining mechanism seems to be X1X2X3X4O in one species; X1X2X3O in three species and X1X2O in the remaining 9 species. The X1X2X3X4O, ? sex-determining mechanism is reported for the first time in spiders. All the chromosomes are with terminal centromeres. C-band preparations in 5 species suggest procentric localization of constitutive heterochromatin in all the chromosomes, though distally located C-band positive blocks are also visible in a few chromosomes. It is suggested that chromosomal evolution in this family has taken place by gradual reduction in diploid number through tandem/centric fusion followed by pericentric inversion in autosomes and nondisjunction/duplication of one X, with subsequent loss of homology in sex chromosomes.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - evolutionary biology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - psychologie. psychophysiologie
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Insect Science
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Plant Science
  • 1 - Life Sciences ; 2 - Biochemistry, Genetics and Molecular Biology ; 3 - Genetics
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Animal Science and Zoology
  • 1 - Health Sciences ; 2 - Medicine ; 3 - General Medicine
Catégories WoS
  • 1 - science ; 2 - genetics & heredity
Identifiant ISTEX
1EC70E04CDB4F434B4BE89CDC1628C08D4D49DB1
Revue

Genetica

Année de publication
1988
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
6.657
Sous-corpus
  • Arthropodes
Type de publication
Journal
ark:/67375/1BB-75G2PBJS-6
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