Select the correct statement with respect to mitosis

Options

A. Chromatids separate but remain in the centre of the cell in anaphase
B. Chromatids start moving towards opposite poles in telophase
C. Golgi complex and endoplasmic reticulum are still visible at the end of prophase
D. Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase

Answer

To solve the question, we need to evaluate the statements provided regarding mitosis and identify the correct one. Here’s a step-by-step breakdown:

### Step 1: Analyze the First Statement
- **Statement:** "Chromatids separate but remain in the center of the cell in anaphase."
- **Evaluation:** In anaphase, chromatids are pulled apart towards opposite poles of the cell. They do not remain in the center; rather, they move away from each other.
- **Conclusion:** This statement is incorrect.

### Step 2: Analyze the Second Statement
- **Statement:** "Chromatids start moving towards opposite poles in telophase."
- **Evaluation:** By the time telophase occurs, chromatids have already moved to opposite poles during anaphase. In telophase, the cell begins to reform the nuclear envelope around the separated chromatids.
- **Conclusion:** This statement is also incorrect.

### Step 3: Analyze the Third Statement
- **Statement:** "Golgi complex and endoplasmic reticulum are still visible at the end of the prophase."
- **Evaluation:** During prophase, the nuclear envelope breaks down and the chromatin condenses into visible chromosomes. The Golgi complex and endoplasmic reticulum typically begin to break down and are not visible at the end of prophase.
- **Conclusion:** This statement is incorrect.

### Step 4: Analyze the Fourth Statement
- **Statement:** "The chromosome moves to the spindle equator and gets aligned along the equatorial plate in the metaphase."
- **Evaluation:** This statement accurately describes the metaphase stage of mitosis. During metaphase, chromosomes align at the spindle equator, also known as the metaphase plate.
- **Conclusion:** This statement is correct.

### Final Answer
The correct statement with respect to mitosis is **Option D**: "The chromosome moves to the spindle equator and gets aligned along the equatorial plate in the metaphase."

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