Spermatogenesis is the process of the formation of male gametes (sperm cells or spermatozoa) from diploid germ cells inside the testes. It is a key topic in the Class 12 Biology chapter on Human Reproduction.
Location: Seminiferous tubules of the testes.
Start cell: Spermatogonia (2n).
End cell: Spermatozoa (n — haploid sperm).
Key Division: Meiosis is used (not mitosis) to halve the chromosome number.
Spermatogenesis occurs inside the seminiferous tubules of the testes.
The process occurs in four sequential stages:
Stage 1 — Multiplication Phase:
Stage 2 — Growth Phase:
Stage 3 — Maturation Phase (Meiosis):
Stage 4 — Spermiogenesis:
Spermatogenesis is the process of formation of haploid sperm cells from diploid spermatogonia inside the seminiferous tubules of the testes. It involves mitosis (multiplication), then meiosis (maturation), and finally spermiogenesis to form mature sperm.
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