Oogenesis Timeline and Stages
Cell Type | Chromosomes | Chromatids | Process | Time of completion |
---|---|---|---|---|
Oogonium | diploid/46(2N) | 2C | Oocytogenesis (mitosis) | Third trimester |
primary oocyte | diploid/46(2N) | 4C |
Ootidogenesis (meiosis I) (Folliculogenesis) |
Dictyate in prophase I for up to 50 years |
secondary oocyte | haploid/23(1N) | 2C | Ootidogenesis (meiosis II) | Halted in metaphase II until fertilization |
Ootid | haploid/23(1N) | 1C | Ootidogenesis (meiosis II) | Minutes after fertilization |
Ovum | haploid/23(1N) | 1C |
Also Read:
What is Oogenesis?
Oogenesis is the process that describes how a mature egg in females develops. Oogenesis is part of a very important process called gametogenesis. Oogenesis helps to ensure that the human species keeps on continuing on the face of the Earth. Oogenesis describes the remarkable journey an oocyte undergoes after it originates from the primordial germ cell. The whole intricate process of oogenesis takes place in the ovarian follicles present in the ovaries. Understanding the process of oogenesis helps us to comprehend female fertility, the menstrual cycle, and female reproductive health.
Table of Content
- What is Gametogenesis?
- What is Oogenesis?
- Process of Oogenesis
- Phases of Oogenesis
- Ovulation
- Oogenesis in Non-Human Mammals
- Ovarian Aging
- Hormonal Control of Oogenesis
- Significance of Oogenesis
- Oogenesis Timeline and Stages
- FAQs – What is Oogenesis?