Cytogenetic Studies in Calomys musculinus (Rodentia, Cricetidae)

In Calomys musculinus (Rodentia, Cricetidae) the meiosis was studied. Diffuse stage was described with conventional and special techniques, and its chronological location was certainty determined through histological sections.Analysing the distribution and frequency of chiasmata a process of termina...

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Publicado: 1988
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00114545_v53_n1_p7_Ciccioli
http://hdl.handle.net/20.500.12110/paper_00114545_v53_n1_p7_Ciccioli
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00114545_v53_n1_p7_Ciccioli
record_format dspace
spelling paper:paper_00114545_v53_n1_p7_Ciccioli2023-06-08T14:34:55Z Cytogenetic Studies in Calomys musculinus (Rodentia, Cricetidae) In Calomys musculinus (Rodentia, Cricetidae) the meiosis was studied. Diffuse stage was described with conventional and special techniques, and its chronological location was certainty determined through histological sections.Analysing the distribution and frequency of chiasmata a process of terminalisation was detected from diplotene up to metaphase I. Studying separately the decrease of the mean of interstitial chiasmata (ich), the increase of the mean of terminal associations (ta), and the development of the relationship ta/tch (terminal associations/total chiasmata number) between diplotene-diakinesis and between diakinesis-metaphase I, significant differences were founded.Sequential events of pairing of the XY pair through the formation of their synaptonemal complex in pachytene at O.M. were analyzed. Data obtained allowed to consider the association between X and Y chromosomes as achiasmatic. © 1988, Japan Mendel Society, International Society of Cytology. All rights reserved. 1988 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00114545_v53_n1_p7_Ciccioli http://hdl.handle.net/20.500.12110/paper_00114545_v53_n1_p7_Ciccioli
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description In Calomys musculinus (Rodentia, Cricetidae) the meiosis was studied. Diffuse stage was described with conventional and special techniques, and its chronological location was certainty determined through histological sections.Analysing the distribution and frequency of chiasmata a process of terminalisation was detected from diplotene up to metaphase I. Studying separately the decrease of the mean of interstitial chiasmata (ich), the increase of the mean of terminal associations (ta), and the development of the relationship ta/tch (terminal associations/total chiasmata number) between diplotene-diakinesis and between diakinesis-metaphase I, significant differences were founded.Sequential events of pairing of the XY pair through the formation of their synaptonemal complex in pachytene at O.M. were analyzed. Data obtained allowed to consider the association between X and Y chromosomes as achiasmatic. © 1988, Japan Mendel Society, International Society of Cytology. All rights reserved.
title Cytogenetic Studies in Calomys musculinus (Rodentia, Cricetidae)
spellingShingle Cytogenetic Studies in Calomys musculinus (Rodentia, Cricetidae)
title_short Cytogenetic Studies in Calomys musculinus (Rodentia, Cricetidae)
title_full Cytogenetic Studies in Calomys musculinus (Rodentia, Cricetidae)
title_fullStr Cytogenetic Studies in Calomys musculinus (Rodentia, Cricetidae)
title_full_unstemmed Cytogenetic Studies in Calomys musculinus (Rodentia, Cricetidae)
title_sort cytogenetic studies in calomys musculinus (rodentia, cricetidae)
publishDate 1988
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00114545_v53_n1_p7_Ciccioli
http://hdl.handle.net/20.500.12110/paper_00114545_v53_n1_p7_Ciccioli
_version_ 1768546003290423296

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