Differentiate between spermatogenesis and oogenesis.
Differences between spermatogenesis and oogenesis:
| Spermatogenesis | Oogenesis |
|---|---|
| * It occurs in the testes. | * It occurs in the ovaries. |
| * Spermatogonia change to primary spermatocytes. | * Oogonia change to primary oocytes. |
| * A primary spermatocyte divides to form two secondary spermatocytes. | * A primary oocytes divides to form one secondary oocyte and one polar body. |
| * A secondary spermatocyte divides to form two spermatids. | * A secondary oocyte divides to form one ootid and one polar body. |
| * No polar body is formed. | * Two polar bodies are formed. |
| * One spermatogonium forms four spermatozoa. | * One oogonium forms one ovum. |
| * Sperms are minute, yolkless and motile. | * Ova are much bigger with yolk and non-motile. |
In case you have any difficulty in understanding the concept of gametogenesis, we suggest you to go through these Topic Notes. Please feel free to post in Ask the Expert section in case of any other related query.