Which of the following option gives the correct sequence of events during mitosis

Options

A. Condensation `rarr` nuclear membrane disassembly `rarr` crossing over `rarr` segregation `rarr` telophase
B. Condensation `rarr` nuclear membrane disassembly `rarr` arrangement at equator `rarr` centromere division `rarr` segregation `rarr` telophase
C. Condensation `rarr` crossing over `rarr` nuclear membrane disassembly `rarr` segregation `rarr` telophase
D. Condensation `rarr` arrangement at equator `rarr` centromere division `rarr` segregation `rarr` telophase

Answer

To determine the correct sequence of events during mitosis, we can break down the process into distinct steps. Here’s the step-by-step solution:

### Step 1: Understand Mitosis
Mitosis is a type of cell division where one parent cell divides to produce two identical daughter cells. It consists of several phases that occur in a specific sequence.

### Step 2: Identify the Phases of Mitosis
The main phases of mitosis include:
1. **Prophase** - Chromatin condenses into visible chromosomes.
2. **Prometaphase** - The nuclear membrane disassembles.
3. **Metaphase** - Chromosomes align at the equatorial plane of the cell.
4. **Anaphase** - Sister chromatids are pulled apart towards opposite poles.
5. **Telophase** - The chromosomes de-condense, and the nuclear membrane re-forms.

### Step 3: Sequence the Events
Based on the standard phases of mitosis, the correct sequence of events is:
1. **Condensation** (Prophase)
2. **Nuclear membrane disassembly** (Prometaphase)
3. **Arrangement at equator** (Metaphase)
4. **Centromere division** (Anaphase)
5. **Segregation** (Anaphase)
6. **Telophase** (final phase)

### Final Sequence:
1. Condensation
2. Nuclear membrane disassembly
3. Arrangement at equator
4. Centromere division
5. Segregation
6. Telophase

### Conclusion
The correct sequence of events during mitosis is:
1. Condensation
2. Nuclear membrane disassembly
3. Arrangement at equator
4. Centromere division
5. Segregation
6. Telophase

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