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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Genetics</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Genetics</journal-title><trans-title-group xml:lang="ru"><trans-title>Генетика</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0016-6758</issn><issn publication-format="electronic">3034-5103</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">667033</article-id><article-id pub-id-type="doi">10.31857/S0016675823120044</article-id><article-id pub-id-type="edn">QDPBWW</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>КРАТКИЕ &#13;
СООБЩЕНИЯ</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КРАТКИЕ СООБЩЕНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Variations in Chromosome Synapsis at Meiotic Prophase I of Mole Voles <italic>Ellobius</italic> <italic>tancrei</italic> Heterozygous for Robertsonian Translocations</article-title><trans-title-group xml:lang="ru"><trans-title>Вариации синапсиса хромосом в профазе I мейоза у слепушонок <italic>Ellobius tancrei</italic> гетерозиготных по робертсоновским транслокациям</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Matveevsky</surname><given-names>S. N.</given-names></name><name xml:lang="ru"><surname>Матвеевский</surname><given-names>С. Н.</given-names></name></name-alternatives><email>sergey8585@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bogdanov</surname><given-names>Yu. F.</given-names></name><name xml:lang="ru"><surname>Богданов</surname><given-names>Ю. Ф.</given-names></name></name-alternatives><email>olkolomiets@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lyapunova</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Ляпунова</surname><given-names>Е. А.</given-names></name></name-alternatives><email>olkolomiets@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bakloushinskaya</surname><given-names>I. Yu.</given-names></name><name xml:lang="ru"><surname>Баклушинская</surname><given-names>И. Ю.</given-names></name></name-alternatives><email>olkolomiets@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kolomiets</surname><given-names>O. L.</given-names></name><name xml:lang="ru"><surname>Коломиец</surname><given-names>О. Л.</given-names></name></name-alternatives><email>olkolomiets@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Vavilov Institute of General Genetics, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт общей генетики им. Н.И. Вавилова Российской академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Koltzov Institute of Developmental Biology, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт биологии развития им. Н.К. Кольцова Российской академии наук</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-12-01" publication-format="electronic"><day>01</day><month>12</month><year>2023</year></pub-date><volume>59</volume><issue>12</issue><fpage>1462</fpage><lpage>1466</lpage><history><date date-type="received" iso-8601-date="2025-02-26"><day>26</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, С.Н. Матвеевский, Ю.Ф. Богданов, Е.А. Ляпунова, И.Ю. Баклушинская, О.Л. Коломиец</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, С.Н. Матвеевский, Ю.Ф. Богданов, Е.А. Ляпунова, И.Ю. Баклушинская, О.Л. Коломиец</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">С.Н. Матвеевский, Ю.Ф. Богданов, Е.А. Ляпунова, И.Ю. Баклушинская, О.Л. Коломиец</copyright-holder><copyright-holder xml:lang="ru">С.Н. Матвеевский, Ю.Ф. Богданов, Е.А. Ляпунова, И.Ю. Баклушинская, О.Л. Коломиец</copyright-holder></permissions><self-uri xlink:href="https://transsyst.ru/0016-6758/article/view/667033">https://transsyst.ru/0016-6758/article/view/667033</self-uri><abstract xml:lang="en"><p id="idm45257553309280">We have shown that different combinations of meiotic configurations (different number of trivalents and different chromosome chain structure) in the same individual can be formed in heterozygotes with the Robertsonian translocations in the meiotic prophase I. Two types of experimental hybrids of the eastern mole vole <italic>Ellobius tancrei</italic> which are heterozygous for four Robertsonian translocations were studied here. Instead of the expected four trivalents, different types of meiotic configurations at the pachytena stage up to 10-element chains were identified. We suggest that the probability of passing meiosis in different cells depends on the structure of the formed chains and possibility of their correction. Such variations in chromosome synapsis during multivalent formation may lead to a decrease in gametes production but not to a complete stop of gametogenesis, which provides the background for the maintenance of Robertsonian translocations in the population.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45257553307664">Установлено, что у гетерозигот по робертсоновским перестройкам в профазе мейоза I могут формироваться различные варианты сочетаний мейотических конфигураций (различное количество тривалентов и разные по структуре цепочки хромосом) у одной и той же особи. В работе были исследованы два типа экспериментальных гибридов восточной слепушонки <italic>Ellobius tancrei</italic>, гетерозиготных по четырем робертсоновским транслокациям. Вместо ожидаемых четырех тривалентов были выявлены разные типы мейотических конфигураций на стадии пахитены, вплоть до цепочек из десяти элементов. Мы предполагаем, что вероятность прохождения мейоза в разных клетках зависит от структуры сформировавшихся цепочек и возможности их коррекции. Такие вариации могут приводить к снижению продукции гамет, но не к полной остановке гаметогенеза, что является основой для сохранения робертсоновских транслокаций в популяции.</p></trans-abstract><kwd-group xml:lang="en"><kwd>synaptonemal complex</kwd><kwd>meiosis</kwd><kwd>trivalent</kwd><kwd>chromosomal rearrangements.</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>синаптонемный комплекс</kwd><kwd>мейоз</kwd><kwd>тривалент</kwd><kwd>хромосомные перестройки.</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Robertson W.M.R.B. Chromosome studies. I. Taxonomic relationships shown in the chromosomes of Tettegidae and Acrididiae: V-shaped chromosomes and their significance in Acrididae, Locustidae and Grillidae: Chromosomes and variations // J. of Morphology. 1916. V. 27. 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