Abstract

We present an electronic microscopy (EM) analysis of synaptonemal complexes (SC) spermatocytes of male silver fox Vulpes fulvus at the pachytene stage. The SC-karyotypes of pachetene cells were made and described. Knowledge of normal SC-karyotype is necessary to reveal synaptic abnormalities of autosome and sex bivalents during the pachytene. It was indicated that EM analysis of SC-spermatocytes—the study of synaptonemal complexes in agricultural animals—is a very good instrument for comparative analysis of normal SC-karyotype of foxes that carry chromosomal abnormalities and in fur-bearing animals as well.

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