The key feature(s) of metaphase is/are

Options

A. Spindle fibres attach to kinetochores of chromosomes
B. Chromosome are moved to spindle equator and get align along metaphase plate
C. Splitting of centromere
D. Both A and B

Explanation

### Step-by-Step Solution

1. **Identify the Stage**: Recognize that the question pertains to the metaphase stage of the cell cycle, which is a part of mitosis.

2. **Understand Key Features of Metaphase**:
- **Spindle Fibers Attachment**: In metaphase, spindle fibers attach to the kinetochores of chromosomes. This is crucial for the proper alignment and separation of chromosomes.
- **Chromosome Alignment**: During metaphase, chromosomes are moved to the spindle equator and align along the metaphase plate. This ensures that each daughter cell will receive an identical set of chromosomes.

3. **Evaluate Options**:
- **Option A**: Spindle fibers attached to kinetochores of chromosomes - **Correct**.
- **Option B**: Chromosomes are moved to spindle equator and get aligned along the metaphase plate - **Correct**.
- **Option C**: Splitting of centromere - **Incorrect** (this occurs in anaphase, not metaphase).
- **Option D**: Both A and B - **Correct** (since both A and B are true).

4. **Conclusion**: The correct answer is option number 4, which states that both A and B are correct features of metaphase.

### Final Answer
The key features of metaphase are:
- Spindle fibers attached to kinetochores of chromosomes.
- Chromosomes are moved to the spindle equator and aligned along the metaphase plate.
Thus, the correct answer is option number 4 (Both A and B).

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