SPERMATOGENESIS AND OOGENESIS
*Spermatogenesis
→In the male reproductive system; the process of producing sperm is called spermatogenesis.
→The sperm production begins at puberty and continues throughout life.
→Spermatogonium, undergoes interphase and primary spermatocyte forms.
→Primary spermatocyte, undergoes first meiotic division and thus, secondary spermatocytes form.
→Secondary spermatocytes, undergo second meiotic division and thus, four spermatids form.
→After spermatids differentiation, 4 sperms form.
Sperm structure:
*Oogenesis
→In the female reproductive system: the process of producing ovum (egg) is called oogenesis.
→The production of ovum begins at puberty and continues until menopause.
→Oogonium, undergoes interphase and primary oocyte forms.
→Primary oocyte, undergoes first meiotic division and thus, first polar body and secondary oocyte cells form.
→Both of the cells, undergo second meiotic division and thus, 3 second polar bodies and 1 ootid cells form.
→The 3 second polar bodies cells degenerate.
→After ootid differentiation, 1 ovum forms.
Ovum structure:
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