Reappearance of nuclear membrane & nucleolus along with thining & elongation in chromosomes are diagnostic characters for the phase:-

Options

A. Anaphase
B. Metaphase
C. Interphase
D. Telophase

Answer

To solve the question regarding the reappearance of the nuclear membrane and nucleolus along with the thinning and elongation of chromosomes, we will analyze each phase of cell division and identify the correct answer.

### Step-by-Step Solution:

1. **Understanding the Phases of Cell Division**:
- Cell division consists of several phases: prophase, metaphase, anaphase, telophase, and interphase. Each phase has distinct characteristics.

2. **Identifying Key Features**:
- The question mentions:
- Reappearance of the nuclear membrane.
- Reappearance of the nucleolus.
- Thinning and elongation of chromosomes.

3. **Analyzing Each Option**:
- **Anaphase**: This phase is characterized by the separation of sister chromatids or homologous chromosomes. The nuclear membrane and nucleolus do not reappear during this phase. Thus, this option is incorrect.
- **Metaphase**: In this phase, chromosomes are aligned at the equatorial plane of the cell. There is no reappearance of the nuclear membrane or nucleolus, making this option incorrect.
- **Interphase**: This is the phase where the cell prepares for division, and the DNA is replicated. However, the nuclear membrane and nucleolus are already present, and chromosomes are not yet visible as they are in a relaxed state. Therefore, this option is also incorrect.
- **Telophase**: This is the final phase of cell division. During telophase, the nuclear membrane and nucleolus reappear, and the chromosomes begin to elongate and thin out as they de-condense back into chromatin. This matches the characteristics mentioned in the question.

4. **Conclusion**:
- Based on the analysis, the correct answer is **telophase** (Option D).

### Final Answer:
The phase characterized by the reappearance of the nuclear membrane and nucleolus, along with the thinning and elongation of chromosomes, is **telophase**.