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Differentiation of the synaptonemal complex and the kinetochore in Locusta spermatocytes studied by whole mount electron microscopy

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Abstract

When Locusta migratoria spermatocytes are surface-spread on various salines, the axial element of leptotene and zygotene chromosomes, and the synaptonemal complex of pachytene chromosomes are well-preserved, although, in most instances, virtually denuded of chromatin. A complex association of chromosome ends with the nuclear membrane is apparent as early as leptotene, and, as pairing is initiated, the nuclear attachment points of the partner half-bivalents fuse, apparently incorporating additional membrane material between them. The meiotic kinetochore originates in association with the axial element during early prophase, and prior to synaptonemal complex formation and chromosome condensation.

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Authors and Affiliations

  1. Abt. Beermann, Max-Planck-Institut für Biologie, Tübingen, Federal Republic of Germany

    S. J. Counce & G. F. Meyer

  2. Department of Anatomy, Duke University Medical Center, Durham, N.C.

    S. J. Counce & G. F. Meyer

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  1. S. J. Counce
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  2. G. F. Meyer
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Counce, S.J., Meyer, G.F. Differentiation of the synaptonemal complex and the kinetochore in Locusta spermatocytes studied by whole mount electron microscopy. Chromosoma 44, 231–253 (1973). https://doi.org/10.1007/BF00329119

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  • DOI: https://doi.org/10.1007/BF00329119

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