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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Autor principal: Ciccioli, M.A.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00114545_v53_n1_p7_Ciccioli
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00114545_v53_n1_p7_Ciccioli2023-10-03T14:09:46Z Cytogenetic Studies in Calomys musculinus (Rodentia, Cricetidae) Ciccioli, M.A. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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.
format JOUR
author Ciccioli, M.A.
spellingShingle Ciccioli, M.A.
Cytogenetic Studies in Calomys musculinus (Rodentia, Cricetidae)
author_facet Ciccioli, M.A.
author_sort Ciccioli, M.A.
title 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)
url http://hdl.handle.net/20.500.12110/paper_00114545_v53_n1_p7_Ciccioli
work_keys_str_mv AT cicciolima cytogeneticstudiesincalomysmusculinusrodentiacricetidae
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