Stage 1: Origin - Spermatogonia.
Spermatogenesis initiates with spermatogonia, diploid stem cells found in the seminiferous tubules.
Stage 2: Production of Primary Spermatocytes.
Spermatogonia divide via mitosis, yielding primary spermatocytes, which remain diploid.
Stage 3: Production of Secondary Spermatocytes.
Primary spermatocytes undergo meiosis I, resulting in haploid secondary spermatocytes.
Stage 4: Production of Spermatids.
Secondary spermatocytes complete meiosis II, producing haploid spermatids.
Stage 5: Production of Spermatozoa.
Spermatids mature through spermiogenesis, differentiating into motile spermatozoa.
Stage 6: Summary.
The correct progression is: Spermatogonium → Primary spermatocyte → Secondary spermatocyte → Spermatids → Spermatozoa.