Step 1: Understanding the Concept:
Oogenesis is the complex biological process by which female gametes (ova) are formed. Unlike spermatogenesis, oogenesis begins during the embryonic development phase of the female fetus, becomes suspended at specific checkpoints, and resumes sequentially after puberty on a monthly cycle.
Step 2: Detailed Explanation:
Let's trace the correct chronological timeline of human oogenesis step-by-step:
1. First Stage: In the fetal ovary, primordial germ cells divide mitotically to produce millions of gamete mother cells called oogonia. These oogonia differentiate into larger primary oocytes. This matches statement (D).
2. Second Stage: These primary oocytes initiate Meiosis I during embryonic development but become structurally arrested at the diplotene stage of prophase I. They remain suspended in this state until puberty. This matches statement (C).
3. Third Stage: After puberty, a surge of Luteinizing Hormone (LH) during each menstrual cycle causes a chosen primary oocyte to resume and complete Meiosis I. This unequal division produces a large haploid secondary oocyte and a tiny first polar body. This matches statement (E).
4. Fourth Stage: The secondary oocyte enters Meiosis II immediately but is arrested a second time at the metaphase II stage. Ovulation occurs while the cell is locked in this phase. This matches statement (B).
5. Fifth Stage: Meiosis II is completed only if a sperm successfully penetrates the secondary oocyte during fertilization. This final division triggers the formation of the mature egg (ootid/ovum) and a second polar body. This matches statement (A).
Arranging these steps sequentially yields: (D) $\rightarrow$ (C) $\rightarrow$ (E) $\rightarrow$ (B) $\rightarrow$ (A). This matches option (C).
Step 3: Final Answer:
The correct chronological sequence of oogenesis is (D), (C), (E), (B), (A).