28 Difference Between Spermatogenesis and Spermiogenesis in human cells.

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  • Spermatogenesis is the process of the formation of haploid sperms from a diploid stem cell known as spermatogonium.
  • The process occurs inside the seminiferous tubules in the testis.
  • The entire process takes about 70 days.
  • Spermatogenic germ cells are called spermatogonia.
  • Spermatogonia are stem cells that are capable of self-renewing.
  • They differentiate into intermediate spermatogonium, which is committed to differentiating into spermatozoa.


  • Oogenesis is the process of formation of the ovum.
  • The process occurs in the ovaries of the female.
  • One oogonium produces a single ovum.
  • Primary oocyte is the diploid cell, which is divided by meiosis, forming a single ovum.
  • Oogenic germ cells are called oogonia, which are stem cells, self-renewing and differentiating into ova.

Difference Between Spermatogenesis and Spermiogenesis

Properties Spermatogenesis Oogenesis
Definition The production of sperms from spermatogonia is called spermatogenesis. The production of eggs from oogonia is called oogenesis.
Oogenesis Occurs in male Occurs in female
Growth phase Too short Prolonged
Formation Seminiferous tubules of testis In ovaries
Process Production of sperms from spermatogonia Production of ovum from oogonia
Cell Division All spermatogonia are divided by meiosis, producing sperms all the times. Some of the oogonia divide during the production of eggs, one at a time.
Continuity Spermatogenesis is a continuous process, occurring after the puberty till death. Early stages of the oogenesis occurs during the fetal period. The rest of the process occurs after the puberty. Only one ovum is produced per month until menopause.
Production of ovum from oogonia Continuous, occurs after the puberty till death Discontinuous, occurs after the puberty until menopause
Nuclear condensation Found Absent
Sertoli cells Sertoli cells are found in the germinal cell epithelium, supporting the germinal cells. No Sertoli cells are found in the germinal cell epithelium.
Food reserve Sperm contains less food reserve Ovum contain a lot of food reserve
Stages All stages occurs inside the testis Except the last stage which occurs in oviduct, all stages occurs inside the ovary
germ line epithelium Involved in gamete production Not involved
Location Occurs entirely in testes Occurs mostly in ovaries
Meiotic Division Equal division of cells Unequal division of cytoplasm
Primary Gametocyte Primary spermatocyte is divided by meiosis 1, forming two secondary spermatocytes. Primary oocyte is divided by meiosis 1, forming a secondary oocyte and one polar body.
Secondary Gametocyte Secondary spermatocyte is divided by meiosis 2, forming two spermatids. Secondary oocyte is divided by meiosis 2, forming ovum and one polar body.
Cytokinesis Equal Unequal
Number of gametes produced 4 1 (plus 2 -3 polar bodies)
Size of gametes Sperm smaller than spermatocytes Ova larger than oocytes
Duration Uninterrupted process In arrested process
Onset beings at puberty Begins in foetus (pre-natal)
Release continuous Monthly from puberty (menstrual cycle)
Initiation of process Begins at puberty Begins even before birth
Motility Sperm are motile Ovum is immotile
Starting cells Start from a primary spermatocyte Start from a primary oocyte
Result Forms four motile male gametes i.e. sperms Forms one non-motile female gamete i.e. ovum
Releasing Sperms are released from the testis Oocytes are released from the ovary which matures later


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