The oogonial cells start dividing and enter into ………A…….of meiotic division and get temporarily arrested at that stage, called ………B……. . During oogenesis at puberty, this oocyte gets surrounded by granulosa cells and then called ……C……..

Options

A. A - Metaphase II , B - Primary oocyte , C - Primary follicle
B. A - Prophase I , B - Primary oocyte, C - Primary follicle
C. A - Prophase I , B - Secondary oocyte, C - Secondary follicle
D. A - Prophase II , B - Secondary oocyte, C - Secondary follicle

Answer

To solve the question step by step, we will fill in the blanks based on the information provided in the transcript.

### Step-by-Step Solution:

1. **Understanding Oogonial Cells**:
- Oogonial cells are the precursor cells in the female reproductive system that undergo division. They are formed during the embryonic stage.

2. **Entering Meiotic Division**:
- Oogonial cells start dividing and enter into the **prophase** of meiotic division. Specifically, they enter **prophase I** of meiosis.

**Fill in Blank A**: Prophase I

3. **Temporary Arrest**:
- These cells get temporarily arrested at this stage, which is referred to as the **primary oocyte**.

**Fill in Blank B**: Primary Oocyte

4. **Surrounding by Granulosa Cells**:
- At puberty, under the influence of hormones, the primary oocyte gets surrounded by granulosa cells, forming a structure known as the **primary follicle**.

**Fill in Blank C**: Primary Follicle

### Final Answers:
- A: Prophase I
- B: Primary Oocyte
- C: Primary Follicle

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