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  • 1
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    Meiotic synapsis in the absence of recombination (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-02-28
    Description: Although in Saccharomyces cerevisiae the initiation of meiotic recombination, as indicated by double-strand break formation, appears to be functionally linked to the initiation of synapsis, meiotic chromosome synapsis in Drosophila females occurs in the absence of meiotic exchange. Electron microscopy of oocytes from females homozygous for either of two meiotic mutants (mei-W68 and mei-P22), which eliminate both meiotic crossing over and gene conversion, revealed normal synaptonemal complex formation. Thus, synapsis in Drosophila is independent of meiotic recombination, consistent with a model in which synapsis is required for the initiation of meiotic recombination. Furthermore, the basic processes of early meiosis may have different functional or temporal relations, or both, in yeast and Drosophila.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McKim, K S -- Green-Marroquin, B L -- Sekelsky, J J -- Chin, G -- Steinberg, C -- Khodosh, R -- Hawley, R S -- New York, N.Y. -- Science. 1998 Feb 6;279(5352):876-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Molecular and Cellular Biology, University of California, Davis, CA 95616, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9452390" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosomes/genetics/*physiology/ultrastructure ; Crossing Over, Genetic ; Drosophila melanogaster/genetics/*physiology ; Female ; Gene Conversion ; *Meiosis ; Mutation ; Oocytes/physiology ; *Recombination, Genetic ; Saccharomyces cerevisiae/genetics/physiology ; Sister Chromatid Exchange ; Synaptonemal Complex/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Chromosome choreography: the meiotic ballet (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-08-09
    Description: The separation of homologous chromosomes during meiosis in eukaryotes is the physical basis of Mendelian inheritance. The core of the meiotic process is a specialized nuclear division (meiosis I) in which homologs pair with each other, recombine, and then segregate from each other. The processes of chromosome alignment and pairing allow for homolog recognition. Reciprocal meiotic recombination ensures meiotic chromosome segregation by converting sister chromatid cohesion into mechanisms that hold homologous chromosomes together. Finally, the ability of sister kinetochores to orient to a single pole at metaphase I allows the separation of homologs to two different daughter cells. Failures to properly accomplish this elegant chromosome dance result in aneuploidy, a major cause of miscarriage and birth defects in human beings.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Page, Scott L -- Hawley, R Scott -- New York, N.Y. -- Science. 2003 Aug 8;301(5634):785-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stowers Institute for Medical Research, 1000 East 50th Street, Kansas City, MO 64110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12907787" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosome Pairing ; Chromosome Segregation ; Chromosomes/*physiology ; DNA/metabolism ; Humans ; *Meiosis ; Synaptonemal Complex/physiology/ultrastructure
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Chromosomal control of meiotic cell division (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-12-08
    Description: Chromosomes have multiple roles both in controlling the cell assembly and structure of the spindle and in determining chromosomal position on the spindle in many meiotic cells and in some types of mitotic cells. Moreover, functionally significant chromosome-microtubule interactions are not limited to the kinetochore but are also mediated by proteins localized along the arms of chromosomes. Finally, chromosomes also play a crucial role in control of the cell cycle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McKim, K S -- Hawley, R S -- New York, N.Y. -- Science. 1995 Dec 8;270(5242):1595-601.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, University of California at Davis 95616, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7502068" target="_blank"〉PubMed〈/a〉
    Keywords: Anaphase ; Animals ; *Cell Cycle ; Chromosomes/*physiology/ultrastructure ; DNA-Binding Proteins/physiology ; Kinesin/physiology ; Kinetochores/physiology ; *Meiosis ; Metaphase ; Microtubule Proteins/physiology ; Microtubules/physiology/ultrastructure ; Mutation ; Nuclear Proteins/physiology ; Spindle Apparatus/physiology/ultrastructure
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Induction of metaphase arrest in Drosophila oocytes by chiasma-based kinetochore tension (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-06-30
    Description: In normal Drosophila melanogaster oocytes, meiosis arrests at metaphase I and resumes after oocyte passage through the oviduct. Thus, metaphase arrest defines a control point in the meiotic cell cycle. Metaphase arrest only occurs in oocytes that have undergone at least one meiotic exchange. Here it is shown that crossovers between homologs attached to the same centromere do not induce metaphase arrest. Hence, exchanges induce metaphase arrest only when they physically conjoin two separate kinetochores. Thus, the signal that mediates metaphase arrest is not the exchange event per se but the resulting tension on homologous kinetochores.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jang, J K -- Messina, L -- Erdman, M B -- Arbel, T -- Hawley, R S -- N01-HD-2-3144/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1995 Jun 30;268(5219):1917-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, University of California at Davis 95616, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7604267" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Crossing Over, Genetic ; Drosophila melanogaster ; Female ; Kinetochores/*physiology ; *Meiosis ; *Metaphase ; Oocytes/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Molecular biology. Hitting a tiny target in the dark (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-02-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hawley, R Scott -- New York, N.Y. -- Science. 2011 Feb 18;331(6019):870-1. doi: 10.1126/science.1202373.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stowers Institute for Medical Research, Kansas City, MO 64110, USA. rsh@stowers.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21330526" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Chromosome Pairing ; Chromosome Segregation ; *Crossing Over, Genetic ; DNA Breaks, Double-Stranded ; Endodeoxyribonucleases/*metabolism ; Male ; *Meiosis ; Mice ; X Chromosome/*physiology ; Y Chromosome/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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