New data on the synaptic process of Mesocricetus auratus: connecting fibers, telomere association and heterosynapsis

M. Guitart, M. Ponsà, M. D. Coll, J. Egozcue

    Research output: Contribution to journalArticleResearchpeer-review

    16 Citations (Scopus)

    Abstract

    The progression of the prophase-I stage in Syrian hamster spermatocytes has been studies at different ages, from 12 to 41 days after birth. Two stages, leptotene and diplotene, were identified, which had not previously been described in the Syrian hamster using spreading techniques. The most interesting observations are the presence of heterosynapses and telomere associations in 2.5% of the cells studies, and of nucleolar filaments also in 2.5%. Connecting fibers are structures that establish different types of bridges between two or three synaptonemal complexes (SCs) or between the elements of a single SC. Heterosynapses and telomere associations consist in the partial pairing of the terminal regions of nonhomologous lateral elements. These phenomena can be observed both in the autosomes and in the sex chromosomes. © 1987 Dr W. Junk Publishers.
    Original languageEnglish
    Pages (from-to)105-112
    JournalGenetica
    Volume74
    Issue number2
    DOIs
    Publication statusPublished - 1 Oct 1987

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