1. The absence of normal Sertoli-spermatocyte interactions in in vitro incubations may also limit dolichol synthesis in the pachytene spermatocyte.

2. As in the spermatocyte of the pachytene stage, the majority of nucleolar chromosomes, in the oöcyte, are acrocentric.

3. The differentiation of eupyrene and Apyrene sperm clarified by Friedländer’s studies on Lepidoptera can be summarized as follows: 1) cysts at the primary spermatocyte stage destined for Apyrene and eupyrene sperm have the potential to become either; 2) the first and key event of dichotomy into eupyrene and Apyrene sperms is the failure of

4. The differentiation of eupyrene and Apyrene sperm clarified by Friedländer’s studies on Lepidoptera can be summarized as follows: 1) cysts at the primary spermatocyte stage destined for Apyrene and eupyrene sperm have the potential to become either; 2) the first and key event of dichotomy into eupyrene and Apyrene sperms is the failure