1a. Mitotic metaphase showing the Reciprocal Translocation between the chromosomes Y and 11
1b. Chain configuration of the quadrivalent Y; 11 during the metaphase of the primary spermatocyte.
1c. Synaptonemal complex in pachytene spermatocyte
1d: Schematic configuration of the meiotic quadrivalent
1e. Meiosis arrest in primary spermatocyte