Academic literature on the topic 'Meiotic Chromosomes'

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Journal articles on the topic "Meiotic Chromosomes"

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Scherthan, H., J. Bähler, and J. Kohli. "Dynamics of chromosome organization and pairing during meiotic prophase in fission yeast." Journal of Cell Biology 127, no. 2 (1994): 273–85. http://dx.doi.org/10.1083/jcb.127.2.273.

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Interactions between homologous chromosomes (pairing, recombination) are of central importance for meiosis. We studied entire chromosomes and defined chromosomal subregions in synchronous meiotic cultures of Schizosaccharomyces pombe by fluorescence in situ hybridization. Probes of different complexity were applied to spread nuclei, to delineate whole chromosomes, to visualize repeated sequences of centromeres, telomeres, and ribosomal DNA, and to study unique sequences of different chromosomal regions. In diploid nuclei, homologous chromosomes share a joint territory even before entry into me
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Lukhtanov, Vladimir A., Vlad Dincă, Magne Friberg, et al. "Versatility of multivalent orientation, inverted meiosis, and rescued fitness in holocentric chromosomal hybrids." Proceedings of the National Academy of Sciences 115, no. 41 (2018): E9610—E9619. http://dx.doi.org/10.1073/pnas.1802610115.

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Chromosomal rearrangements (e.g., fusions/fissions) have the potential to drive speciation. However, their accumulation in a population is generally viewed as unlikely, because chromosomal heterozygosity should lead to meiotic problems and aneuploid gametes. Canonical meiosis involves segregation of homologous chromosomes in meiosis I and sister chromatid segregation during meiosis II. In organisms with holocentric chromosomes, which are characterized by kinetic activity distributed along almost the entire chromosome length, this order may be inverted depending on their metaphase I orientation
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Kaback, David B., Dianna Barber, Jim Mahon, Jacque Lamb, and Jerome You. "Chromosome Size-Dependent Control of Meiotic Reciprocal Recombination in Saccharomyces cerevisiae: The Role of Crossover Interference." Genetics 152, no. 4 (1999): 1475–86. http://dx.doi.org/10.1093/genetics/152.4.1475.

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Abstract In the yeast Saccharomyces cerevisiae, small chromosomes undergo meiotic reciprocal recombination (crossing over) at rates (centimorgans per kilobases) greater than those of large chromosomes, and recombination rates respond directly to changes in the total size of a chromosomal DNA molecule. This phenomenon, termed chromosome size-dependent control of meiotic reciprocal recombination, has been suggested to be important for ensuring that homologous chromosomes cross over during meiosis. The mechanism of this regulation was investigated by analyzing recombination in identical genetic i
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Carlson, W. R., and R. R. Roseman. "A new property of the maize B chromosome." Genetics 131, no. 1 (1992): 211–23. http://dx.doi.org/10.1093/genetics/131.1.211.

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Abstract TB-9Sb is a translocation between the B chromosome and chromosome 9 in maize. Certain deletions of B chromatin from the translocation cause a sharp decrease in B-9 transmission compared to the rate for standard TB-9Sb. The deletions remove components of a B chromosome genetic system that serves to suppress meiotic loss in the female. At least two distinct B-chromosome regions suppress meiotic loss: one on the B-9 and one on 9-B. The system operates by stabilizing univalent B-type chromosomes. It allows the univalents to migrate to one pole in meiosis, despite the absence of a pairing
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Pelttari, Jeanette, Mary-Rose Hoja, Li Yuan, et al. "A Meiotic Chromosomal Core Consisting of Cohesin Complex Proteins Recruits DNA Recombination Proteins and Promotes Synapsis in the Absence of an Axial Element in Mammalian Meiotic Cells." Molecular and Cellular Biology 21, no. 16 (2001): 5667–77. http://dx.doi.org/10.1128/mcb.21.16.5667-5677.2001.

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ABSTRACT The behavior of meiotic chromosomes differs in several respects from that of their mitotic counterparts, resulting in the generation of genetically distinct haploid cells. This has been attributed in part to a meiosis-specific chromatin-associated protein structure, the synaptonemal complex. This complex consist of two parallel axial elements, each one associated with a pair of sister chromatids, and a transverse filament located between the synapsed homologous chromosomes. Recently, a different protein structure, the cohesin complex, was shown to be associated with meiotic chromosome
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Kneitz, Burkhard, Paula E. Cohen, Elena Avdievich, et al. "MutS homolog 4 localization to meiotic chromosomes is required for chromosome pairing during meiosis in male and female mice." Genes & Development 14, no. 9 (2000): 1085–97. http://dx.doi.org/10.1101/gad.14.9.1085.

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Msh4 (MutS homolog 4) is a member of the mammalian mismatch repair gene family whose members are involved in postreplicative DNA mismatch repair as well as in the control of meiotic recombination. In this report we show that MSH4 has an essential role in the control of male and female meiosis. We demonstrate that MSH4 is present in the nuclei of spermatocytes early in prophase I and that it forms discrete foci along meiotic chromosomes during the zygotene and pachytene stages of meiosis. Disruption of the Msh4 gene in mice results in male and female sterility due to meiotic failure. Although m
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Tian, Miao, Christiane Agreiter, and Josef Loidl. "Spatial constraints on chromosomes are instrumental to meiotic pairing." Journal of Cell Science 133, no. 22 (2020): jcs253724. http://dx.doi.org/10.1242/jcs.253724.

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ABSTRACTIn most eukaryotes, the meiotic chromosomal bouquet (comprising clustered chromosome ends) provides an ordered chromosome arrangement that facilitates pairing and recombination between homologous chromosomes. In the protist Tetrahymena thermophila, the meiotic prophase nucleus stretches enormously, and chromosomes assume a bouquet-like arrangement in which telomeres and centromeres are attached to opposite poles of the nucleus. We have identified and characterized three meiosis-specific genes [meiotic nuclear elongation 1-3 (MELG1-3)] that control nuclear elongation, and centromere and
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Fedak, George, and John Grainger. "Chromosome instability in somaclones of a Triticum crassum × Hordeum vulgare hybrid." Canadian Journal of Genetics and Cytology 28, no. 4 (1986): 618–23. http://dx.doi.org/10.1139/g86-090.

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Immature inflorescence culture and subsequent plant regeneration was practiced for four successive cycles using a Triticum crassum × Hordeum vulgare hybrid cultured on Kao's medium supplemented with 2,4-dichlorophenoxyacetic acid (5 mg/mL). In one line, chromosomal mixoploidy was observed among both mitotic and meiotic cells. Variation in chromosome number of 20 to 98 was observed in mitotic and 14 to 68 among meiocytes in the first cycle regenerants. The range in chromosome number decreased in subsequent regeneration cycles. Fragmented chromosomes were observed at low frequencies in both grou
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He, Le-Le, Ying Miao, He-Hong Wang, Jie Zhang, and Bao-Zhen Hua. "Dynamic meiotic behavior and evolutionary insights of supernumerary B chromosomes in the hangingfly Bittacus cirratus (Mecoptera, Bittacidae)." Comparative Cytogenetics 19 (June 4, 2025): 91–107. https://doi.org/10.3897/compcytogen.19.153340.

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Supernumerary B chromosomes are significant dispensable genetic elements that follow their own species-specific evolutionary pathways. Despite their widespread occurrence, comprehensive analyses of their meiotic behavior remain limited. In this study, we present the first systematic investigation of B chromosome morphology and meiotic behavior in the hangingfly Bittacus cirratus Tjeder, 1956 using cytogenetic approaches. The male basal chromosome numbers of B. cirratus is 2n = 30 + XO, with 0–5 polymorphic B chromosomes. Intraspecific B chromosome polymorphism manifests as various distinct mor
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He, Le-Le, Ying Miao, He-Hong Wang, Jie Zhang, and Bao-Zhen Hua. "Dynamic meiotic behavior and evolutionary insights of supernumerary B chromosomes in the hangingfly Bittacus cirratus (Mecoptera, Bittacidae)." Comparative Cytogenetics 19 (June 4, 2025): 91–107. https://doi.org/10.3897/compcytogen.19.153340.

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Supernumerary B chromosomes are significant dispensable genetic elements that follow their own species-specific evolutionary pathways. Despite their widespread occurrence, comprehensive analyses of their meiotic behavior remain limited. In this study, we present the first systematic investigation of B chromosome morphology and meiotic behavior in the hangingfly <i>Bittacus cirratus</i> Tjeder, 1956 using cytogenetic approaches. The male basal chromosome numbers of <i>B. cirratus</i> is 2n = 30 + XO, with 0–5 polymorphic B chromosomes. Intraspecific B chromosome polymorphism manifests as variou
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Dissertations / Theses on the topic "Meiotic Chromosomes"

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Novak, Ivana. "Molecular architecture of meiotic chromosomes /." Stockholm, 2006. http://diss.kib.ki.se/2006/91-7140-959-9/.

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Tiscareño, Andrade Mariana. "Characterization of chromosome dynamics during meiotic prophase in Arabidopsis thaliana." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASB070.

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La méiose est une division cellulaire spécialisée qui génère des cellules haploïdes à l'origine des gamètes. Chez la plupart des eucaryotes à reproduction sexuée, de la variation génétique est introduite, d'une génération à l'autre, notamment par la formation de crossovers (CO) - des échanges génétiques entre chromosomes homologues. Ces COs se produisent par recombinaison homologue au cours de la prophase méiotique I et sont essentiels pour une ségrégation correcte des chromosomes à l'anaphase I. Au cours de la prophase I, les chromosomes sont soumis à plusieurs processus dynamiques : (i) l'ap
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Hoja, Mary-Rose. "Proteins influencing the integrity of meiotic chromosome dynamics /." Stockholm, 2002. http://diss.kib.ki.se/2002/91-7349-269-8/.

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Bouftas, Nora. "Control of meiotic divisions in oocytes : a novel role for cyclin B3." Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS176.

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La méiose est un processus très réglementé composé de deux divisions successives, la méiose I et II, qui doivent être complétées dans l’ordre pour obtenir des gamètes haploïdes avec le nombre correct de chromosomes. La méiose chez les femelles est un processus sujet aux erreurs, où les erreurs de ségrégation créent des gamètes aneuploïdes. De plus, l'incidence d'aneuploïdie augmente avec l'âge. Comprendre la régulation de la méiose chez les femelles mammifères est donc essentiel. Les divisions méiotiques sont régulées par les cyclines associées à leurs partenaires catalytiques, les Cdks. J'ai
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Courret, Cécile. "Bases génétiques et évolution du conflit génétique induit par la distorsion de ségrégation des chromosomes sexuels chez Drosophila simulans." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS495/document.

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La distorsion de ségrégation méiotique est une entorse à la loi de ségrégation équilibrée des allèles via les gamètes. Les gènes ou éléments génétiques causaux (distorteurs de ségrégation) empêchent, chez les hétérozygotes, la production de gamètes qui ne les contiennent pas. Ils peuvent ainsi se répandre dans les populations même s’ils sont délétères pour les individus porteurs.Parce qu'ils induisent un biais du sexe ratio, les distorteurs liés au sexe et s'exprimant dans le sexe hétérogamétique sont générateurs de conflits intragénomiques, caractérisés par l'évolution de suppresseurs qui ten
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Lee, Chih-ying. "Bouquet formation, rapid prophase movements and homologous pairing during meiotic prophase in Saccharomyces cerevisiae." Oklahoma City : [s.n.], 2009.

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Kirkpatrick, Gordon. "Chromosome segregation and meiotic defects in carriers of chromosomal abnormalities." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/9705.

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Male carriers of chromosomal abnormalities (CA) are more frequent in the infertile population. These men have higher levels of sperm aneuploidy due to the aberrant segregation of the chromosomes involved in the abnormality. The presence of a CA may also influence the segregation of other chromosomes, in a process known as in interchromosomal effect (ICE). The behaviour of the CA during meiosis may account for the infertility observed in this population. We studied chromosome segregation, ICE and meiotic defects in a variety of CA. In carriers of CA, we determined the segregation patterns of c
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Helleu, Quentin. "Nature, fonction et évolution d’un élément génétique égoïste chez Drosophila simulans." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS134.

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Les distorteurs de ségrégation méiotiques sont des éléments génétiques égoïstes qui favorisent leur propre transmission en manipulant la méiose à leur avantage. La diffusion dans les populations d’un distorteur lié au chromosome X (Sex-Ratio) provoque un excès de femelles et cela conduit à un conflit entre le chromosome X et les autres chromosomes. Ces conflits intra-génomiques sont d’importants moteurs de l’évolution des génomes. Mais, peu de choses sont connues sur la nature moléculaire et la fonction des éléments égoïstes Sex-Ratio. Le premier chapitre de cette thèse présente une synthèse a
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Resnick, Tamar Deborah. "The role of the chromosomal passenger complex and condensin complex in meiotic chromosome cohesion and segregation." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/38990.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 2007.<br>Includes bibliographical references.<br>The canonical mitotic cell cycle is modified in metazoans to achieve a variety of developmental goals. Among these, meiotic divisions reduce the DNA content of the cell, haploid gametes fuse and reenter mitotic cycling, and mitoses of early embryogenesis, in many animals, employ a rapid cell cycle that lacks gap phases. Much less is understood about regulation of these developmentally regulated cell cycles, than about canonical mitosis, because they cannot be studied in ti
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Pyatnitskaya, Alexandra. "Interplay between meiotic crossing-overs and chromosome architecture : role of the meiosis specific complex Zip2-Zip4-Spo16." Electronic Thesis or Diss., Université Paris sciences et lettres, 2021. http://www.theses.fr/2021UPSLS061.

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La méiose est une étape essentielle de la reproduction chez tous les organismes sexués. En effet, celle-ci permet l’obtention de quatre gamètes haploïdes à partir d’une seule cellule diploïde grâce à la réalisation deux divisions successives suivant une seule étape de réplication. Un des éléments essentiels permettant une bonne ségrégation en première division méiotique est la création d’un échange physique entre les chromosomes homologues parentaux. Ce lien physique, plus communément appelé crossing-over (CO), est produit par un mécanisme de recombinaison entre les chromosomes homologues au c
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Books on the topic "Meiotic Chromosomes"

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Bogdanov, I︠U︡ F. Sinaptonemnyĭ kompleks: Indikator dinamiki meĭoza i izmenchivosti khromosom. Tov-vo nauch. izd. KMK, 2007.

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Khazanehdari, Kamal Aldin. Meiotic chromosome behaviour and somatic chromosome variation in the leek (Allium porrum L.). University of Birmingham, 1995.

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1942-, Egel Richard, and Lankenau Dirk-Henner, eds. Recombination and meiosis: Crossing-over and disjunction. Springer, 2008.

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Antoine Hendrik Felix Marie Peters. Non-homologous chromosome synapsis during mouse meiosis: Consequences for male fertility and survival of progeny. [s.n.], 1997.

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Goldman, Alastair Simon Howard. The segregation of normal and translocated chromosomes in human male meiosis: Analysis utilizing fluorescent in situ hybridisation. University of Birmingham, 1993.

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Egel, Richard. Recombination and Meiosis: Models, Means, and Evolution. Springer-Verlag Berlin Heidelberg, 2008.

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O'Keeffe, Christine. Analysis of the initiation and progression of homologous chromosome pairing at meiosis in the female mouse using fluorescence in situ hybridisation. University of Birmingham, 1997.

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Sybenga, J. Meiotic Configurations: A Source of Information for Estimating Genetic Parameters. Springer, 2012.

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Sybenga, J. Meiotic Configurations: A Source of Information for Estimating Genetic Parameters. Springer, 2011.

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McKinlay Gardner, R. J., and David J. Amor. The Origins and Consequences of Chromosome Pathology. Edited by R. J. McKinlay Gardner and David J. Amor. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199329007.003.0003.

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To deal intelligently with common questions from “chromosomal families,” counselors need a broad knowledge of how gametes form, how chromosomes behave, and how the early conceptus grows. This chapter describes the ways in which chromosomes are transmitted, and the ways in which these processes can go wrong and lead to clinical abnormality. The distinction is made between “pure” aneuploidies, and abnormalities due to structural rearrangement. In particular, meiotic nondisjunction, with respect to the generation of pure aneuploidy, is discussed in considerable detail. The origins of chromosome m
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Book chapters on the topic "Meiotic Chromosomes"

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Solari, Alberto J. "Meiotic Chromosomes and Meiotic Mechanisms." In Chromosomes Today. Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-017-1033-6_11.

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Therman, Eeva. "Meiotic Abnormalities." In Human Chromosomes. Springer US, 1986. http://dx.doi.org/10.1007/978-1-4684-0269-8_16.

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Therman, Eeva, and Millard Susman. "Meiotic Abnormalities." In Human Chromosomes. Springer US, 1993. http://dx.doi.org/10.1007/978-1-4684-0529-3_19.

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Stack, S. M., J. D. Sherman, L. K. Anderson, and L. S. Herickhoff. "Meiotic nodules in vascular plants." In Chromosomes Today. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1510-0_23.

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Kleckner, Nancy. "Seeing meiotic chromosomes without seeing them." In Chromosomes Today. Birkhäuser Basel, 2000. http://dx.doi.org/10.1007/978-3-0348-8484-6_9.

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Miller, Orlando J., and Eeva Therman. "Meiotic Abnormalities: Abnormal Numbers of Chromosomes." In Human Chromosomes. Springer New York, 2001. http://dx.doi.org/10.1007/978-1-4613-0139-4_11.

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Scherthan, H. "Chromosome behaviour in earliest meiotic prophase." In Chromosomes Today. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-1537-4_14.

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Loidl, Josef, Pawel Pasierbek, and Ann M. Rose. "Conservation and Variability of Meiotic Processes — Lessons from the Unconventional Meiosis of C. elegans." In Chromosomes Today. Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-017-1033-6_10.

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Ashley, T. "Meiotic behavior of sex chromosomes: what is normal?" In Chromosomes Today. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-010-9166-4_18.

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Cheng, Zhukuan. "Analyzing Meiotic Chromosomes in Rice." In Methods in Molecular Biology. Humana Press, 2013. http://dx.doi.org/10.1007/978-1-62703-333-6_13.

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Conference papers on the topic "Meiotic Chromosomes"

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Кудрявцева, Н. А., Л. И. Хрусталева, С. В. Одинцов, А. М. Пивоваров, А. С. Ермолаев, and С. А. Симановский. "COMPARATIVE IMMUNOFLUORESCENCE ANALYSIS OF MEIOTIC PROTEINS (ASY1, ZYP1, MLH1, MUS81 and CENH3) IN ALLIUM CEPA AND ALLIUM FISTULOSUM." In Биотехнология в растениеводстве, животноводстве и сельскохозяйственной микробиологии. Crossref, 2022. http://dx.doi.org/10.48397/arriab.2022.22.xxii.077.

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Большинство живых организмов имеют случайное распределение хиазм вдоль хромосом как у лука репчатого (A. cepa). И только немногие являются исключением! Таким исключением является лук-батун (A. fistulosum), у которого хиазмы строго локализованы в проксимальных областях хромосом. Хиазмы – цитологическое проявление кроссинговера. Диаметрально противоположное распределение хиазм возможно является причиной стерильности BC1 гибридов между A. cepa и A. fistulosum. Most living organisms have a random distribution of chiasmata along the chromosomes, like onions (A. cepa). And only a few are exceptions!
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Escandon, Julia, Scott Lindsey, Mark S. Eller, and James M. Grichnik. "Abstract 3010: Meiotic cohesin REC8 associates with chromosome instability in melanoma." In Proceedings: AACR 106th Annual Meeting 2015; April 18-22, 2015; Philadelphia, PA. American Association for Cancer Research, 2015. http://dx.doi.org/10.1158/1538-7445.am2015-3010.

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Stuart, Maritza Regina, Patricia Maria Raulilno de Campos, Luíz Rafaelli Coutinho, Vania Ana Silveira Muniz, Daniela Soldera, and Ana Paula Madalena da Silva. "The role of the nurse in the care of children with down syndrome." In III SEVEN INTERNATIONAL MULTIDISCIPLINARY CONGRESS. Seven Congress, 2023. http://dx.doi.org/10.56238/seveniiimulti2023-228.

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Down syndrome is a genetic condition caused by trisomy 21 and which leads to inadequate chromosomal distribution during the meiosis phase. Down syndrome is not a disease. It consists of a natural genetic occurrence that happens for unknown reasons, in pregnancy, during the division of the cells of the embryo. It is a chromosomal alteration, when children are born endowed with three chromosomes (trisomy) 21, and not two as usual. This genetic alteration affects the development of the individual, determining some peculiar physical and cognitive characteristics. Faced with the positive diagnosis
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"Retention and evolution of centromeric histone paralogs in rye: essential for the organization of chromosomes in rye meiosis." In Plant Genetics, Genomics, Bioinformatics, and Biotechnology (PlantGen2023). FRC Kazan Scientific Center RAS, Kazan, Russia;Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia, 2023. http://dx.doi.org/10.18699/plantgen2023-21.

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Reports on the topic "Meiotic Chromosomes"

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Pawlowski, Wojtek P., and Avraham A. Levy. What shapes the crossover landscape in maize and wheat and how can we modify it. United States Department of Agriculture, 2015. http://dx.doi.org/10.32747/2015.7600025.bard.

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Meiotic recombination is a process in which homologous chromosomes engage in the exchange of DNA segments, creating gametes with new genetic makeup and progeny with new traits. The genetic diversity generated in this way is the main engine of crop improvement in sexually reproducing plants. Understanding regulation of this process, particularly the regulation of the rate and location of recombination events, and devising ways of modifying them, was the major motivation of this project. The project was carried out in maize and wheat, two leading crops, in which any advance in the breeder’s tool
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Singh, Anjali. Estimating the Chiasma Frequency in Diplotene-Diakinesis Stage. ConductScience, 2020. http://dx.doi.org/10.55157/cs20200925.

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Chiasma is the point of crossing over or site where the exchange of genetic material takes place between two homologous, non-sister chromatids. The crossover occurs in the pachytene stage, however, it is observed in the diplotene stage of meiosis-I[2]. The cross-over between the two homologs also creates a new combination of parental genes, forming recombinants. The recombination of the genes causes variation in the population and exert a profound effect on genomic diversity and evolution. Meiotic recombination and variation in the population have been a concern for scientists to understand th
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Durham, Mary. Demonstrating Meiosis Using Manipulatable Chromosomes and Cells. Genetics Society of America Peer-Reviewed Education Portal (GSA PREP), 2015. http://dx.doi.org/10.1534/gsaprep.2015.002.

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