Diakinetic and metaphase spermatocytes: Cells in these stages are about 4.5–5.5 in size and contain large chromatin blocks consisting of tightly packed 26 nm fibers that are part of complete forms of chromosome in diakinetic stage (Fig. 7), which are separated and thenmove to be aligned at the equatorial region inmetaphase (Fig. 8).Centrioles appeared at either