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Synaptonemal Complex Analysis in Oocytes and Spermatocytes of Threespine Stickleback Gasterosteus Aculeatus (Teleostei, Gasterosteidae)

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Abstract

A surface-spreading synaptonemal complex (SC) technique was employed to analyze spermatocytes and oocytes of stickleback, Gasterosteus aculeatus, in order to visualize the process of chromosome synapsis. The mean SC length was 150 ± 18 μm in three males and 143 ± 12 μm in one female analyzed. A representative SC karyotype with 21bivalents was also presented. Each SC had lateral elements of equal length. No bivalent displaying the atypical synaptic behaviour which is often associated with heteromorphic sex chromosomes was observed neither in males nor in the female analyzed.

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Authors and Affiliations

  1. Departamento de Genética, Facultad de Biología, Universidad Complutense, 28040-, Madrid, Spain

    N. Cuñado, J. Barrios & J.L. Santos

  2. Departamento de Biología Fundamental, Area de Genética, Universidad de Santiago de Compostela, 27002-, Lugo, Spain

    E. San Miguel, R. Amaro, C. Fernández & M. Hermida

Authors
  1. N. Cuñado
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  2. J. Barrios
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  3. E. San Miguel
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  4. R. Amaro
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  5. C. Fernández
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  6. M. Hermida
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  7. J.L. Santos
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Cuñado, N., Barrios, J., Miguel, E.S. et al. Synaptonemal Complex Analysis in Oocytes and Spermatocytes of Threespine Stickleback Gasterosteus Aculeatus (Teleostei, Gasterosteidae). Genetica 114, 53–56 (2002). https://doi.org/10.1023/A:1014685114092

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  • DOI: https://doi.org/10.1023/A:1014685114092

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