Analysis of meiotic chromosome structure and behavior in Robertsonian heterozygotes of Ellobius tancrei (Rodentia, Cricetidae): a case of monobrachial homology

Abstract. (SC) chains were revealed in semisterile intraspecific F1 hybrids of Ellobius tancrei Blasius, 1884 (2n = 49, NF=56 and 2n=50, NF=56), heterozygous for (Rb) translocations. Chains were formed by Rb submetacentrics with monobrachial homology. Chromosome synapsis in spermatocytes of these hy...

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Autores principales: Matveevsky, Sergey, Bakloushinskaya, Irina, Tambovtseva, Valentina, Romanenko, Svetlana, Kolomiets, Oxana
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Pensoft Publishers 2015
Materias:
Research Articles
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4698581/
https://www.ncbi.nlm.nih.gov/pubmed/26752380
http://dx.doi.org/10.3897/CompCytogen.v9i4.5674
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author Matveevsky, Sergey
Bakloushinskaya, Irina
Tambovtseva, Valentina
Romanenko, Svetlana
Kolomiets, Oxana
author_facet Matveevsky, Sergey
Bakloushinskaya, Irina
Tambovtseva, Valentina
Romanenko, Svetlana
Kolomiets, Oxana
author_sort Matveevsky, Sergey
collection PubMed
description Abstract. (SC) chains were revealed in semisterile intraspecific F1 hybrids of Ellobius tancrei Blasius, 1884 (2n = 49, NF=56 and 2n=50, NF=56), heterozygous for (Rb) translocations. Chains were formed by Rb submetacentrics with monobrachial homology. Chromosome synapsis in spermatocytes of these hybrids was disturbed, apparently because of the problematic release of the chromosomes from the SC chains. These hybrids suffer from low fertility, and our data support the opinion that this is because a formation of Rb metacentrics with monobrachial homology within different races of the same species might be an initial event for the divergence of chromosomal forms.
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spelling pubmed-46985812016-01-08 Analysis of meiotic chromosome structure and behavior in Robertsonian heterozygotes of Ellobius tancrei (Rodentia, Cricetidae): a case of monobrachial homology Matveevsky, Sergey Bakloushinskaya, Irina Tambovtseva, Valentina Romanenko, Svetlana Kolomiets, Oxana Comp Cytogenet Research Articles Abstract. (SC) chains were revealed in semisterile intraspecific F1 hybrids of Ellobius tancrei Blasius, 1884 (2n = 49, NF=56 and 2n=50, NF=56), heterozygous for (Rb) translocations. Chains were formed by Rb submetacentrics with monobrachial homology. Chromosome synapsis in spermatocytes of these hybrids was disturbed, apparently because of the problematic release of the chromosomes from the SC chains. These hybrids suffer from low fertility, and our data support the opinion that this is because a formation of Rb metacentrics with monobrachial homology within different races of the same species might be an initial event for the divergence of chromosomal forms. Pensoft Publishers 2015-12-02 /pmc/articles/PMC4698581/ /pubmed/26752380 http://dx.doi.org/10.3897/CompCytogen.v9i4.5674 Text en Sergey Matveevsky, Irina Bakloushinskaya, Valentina Tambovtseva, Svetlana Romanenko, Oxana Kolomiets http://creativecommons.org/licenses/by/4.0 This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Articles
Matveevsky, Sergey
Bakloushinskaya, Irina
Tambovtseva, Valentina
Romanenko, Svetlana
Kolomiets, Oxana
Analysis of meiotic chromosome structure and behavior in Robertsonian heterozygotes of Ellobius tancrei (Rodentia, Cricetidae): a case of monobrachial homology
title Analysis of meiotic chromosome structure and behavior in Robertsonian heterozygotes of Ellobius tancrei (Rodentia, Cricetidae): a case of monobrachial homology
title_full Analysis of meiotic chromosome structure and behavior in Robertsonian heterozygotes of Ellobius tancrei (Rodentia, Cricetidae): a case of monobrachial homology
title_fullStr Analysis of meiotic chromosome structure and behavior in Robertsonian heterozygotes of Ellobius tancrei (Rodentia, Cricetidae): a case of monobrachial homology
title_full_unstemmed Analysis of meiotic chromosome structure and behavior in Robertsonian heterozygotes of Ellobius tancrei (Rodentia, Cricetidae): a case of monobrachial homology
title_short Analysis of meiotic chromosome structure and behavior in Robertsonian heterozygotes of Ellobius tancrei (Rodentia, Cricetidae): a case of monobrachial homology
title_sort analysis of meiotic chromosome structure and behavior in robertsonian heterozygotes of ellobius tancrei (rodentia, cricetidae): a case of monobrachial homology
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4698581/
https://www.ncbi.nlm.nih.gov/pubmed/26752380
http://dx.doi.org/10.3897/CompCytogen.v9i4.5674
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