Question

At which stage of life the oogenesis process is initiated?

• A. Puberty
• B. Embryonic development stage
• C. Birth
• D. Adult

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Oogenesis is the process of formation of a mature female gamete.
Detailed Explanation:
Unlike spermatogenesis, which starts at puberty, oogenesis is initiated during the fetal life (embryonic development stage). Millions of oogonia are formed within each fetal ovary; no more oogonia are formed or added after birth. These cells enter meiosis I but get arrested at the prophase stage (diplotene) until puberty.
Step 2: Final Answer:
Oogenesis begins during the embryonic stage.