Chromosome Banding in Amphibia. XXXIV. Intrachromosomal Telomeric DNA Sequences in Anura

Please always quote using this URN: urn:nbn:de:bvb:20-opus-196693
  • The mitotic chromosomes of 4 anuran species were examined by various classical banding techniques and by fluorescence in situ hybridization using a (TTAGGG)\(_n\) repeat. Large intrachromosomal telomeric sequences (ITSs) were demonstrated in differing numbers and chromosome locations. A detailed comparison of the present results with numerous published and unpublished data allowed a consistent classification of the various categories of large ITSs present in the genomes of anurans and other vertebrates. The classification takes intoThe mitotic chromosomes of 4 anuran species were examined by various classical banding techniques and by fluorescence in situ hybridization using a (TTAGGG)\(_n\) repeat. Large intrachromosomal telomeric sequences (ITSs) were demonstrated in differing numbers and chromosome locations. A detailed comparison of the present results with numerous published and unpublished data allowed a consistent classification of the various categories of large ITSs present in the genomes of anurans and other vertebrates. The classification takes into consideration the total numbers of large ITSs in the karyotypes, their chromosomal locations and their specific distribution patterns. A new category of large ITSs was recognized to exist in anuran species. It consists of large clusters of ITSs located in euchromatic chromosome segments, which is in clear contrast to the large ITSs in heterochromatic chromosome regions known in vertebrates. The origin of the different categories of large ITSs in heterochromatic and euchromatic chromosome regions, their mode of distribution in the karyotypes and evolutionary fixation in the genomes, as well as their cytological detection are discussed.show moreshow less

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Metadaten
Author: Michael Schmid, Claus Steinlein
URN:urn:nbn:de:bvb:20-opus-196693
Document Type:Journal article
Faculties:Medizinische Fakultät / Institut für Humangenetik
Language:English
Parent Title (English):Cytogenetic and Genome Research
ISSN:1424-8581
ISSN:1424-859X
Year of Completion:2016
Volume:148
Issue:2-3
Pagenumber:211-226
Source:Cytogenetic and Genome Research 2016;148(2-3):211–226. DOI: 10.1159/000446298
DOI:https://doi.org/10.1159/000446298
Pubmed Id:https://pubmed.ncbi.nlm.nih.gov/27233250
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
Tag:Anura; euchromatin; evolutionary fixation; heterochromatin; intrachromosomal telomeric sequences
Release Date:2021/08/20
Date of first Publication:2016/05/28
Note:
This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Licence (German):License LogoDeutsches Urheberrecht