Human Reproduction: Gametogenesis
Primary oocyte is arrested at which meiotic stage until puberty?
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About This Question
- Subject
- biology
- Chapter
- reproduction
- Topic
- human reproduction: gametogenesis
- Difficulty
- Hard
- Year
- 2025
Solution
Correct Answer:
Prophase I (diplotene)
- Oogenesis: The process of female gamete formation begins during the embryonic development stage.
- Initiation: Millions of oogonia are formed in each fetal ovary; no more are added after birth.
- Early Arrest: These cells start division and enter Prophase-I of the meiotic division and get temporarily arrested at that stage. Specifically, the arrest occurs at the Diplotene stage (also called the dictyate stage).
- Puberty: This primary oocyte remains arrested within the primary follicle until puberty, after which hormonal cycles cause it to complete the first meiotic division just before ovulation.
This hard difficulty biology question is from the chapter reproduction, covering the topic of human reproduction: gametogenesis. It appeared in the 2025 exam.
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