The nuclear spindle :–

Options

A. Is formed in amitotic division
B. Is formed in mitotic division
C. Is formed in meiotic division
D. Is formed in mitotic and meiotic division

Answer

### Step-by-Step Solution:

1. **Understanding the Nuclear Spindle**: The nuclear spindle is a structure that forms during cell division. It is composed of microtubules that help segregate chromosomes into the daughter cells.

2. **Identifying the Types of Cell Division**: There are two main types of cell division where the nuclear spindle is involved:
- **Mitosis**: This is the process of cell division that results in two genetically identical daughter cells. The nuclear spindle forms to separate the sister chromatids.
- **Meiosis**: This is a specialized form of cell division that reduces the chromosome number by half, resulting in four genetically diverse gametes. The nuclear spindle also forms during this process to separate homologous chromosomes and sister chromatids.

3. **Evaluating the Options**:
- **Option 1**: States that the nuclear spindle is formed only during mitotic division. This is incorrect because the spindle also forms during meiosis.
- **Option 2**: Also states that the nuclear spindle is formed only during mitotic division. This is again incorrect for the same reason as option 1.
- **Option 3**: States that the nuclear spindle is formed during meiotic division. This is correct, but it does not encompass the full scope of where the spindle forms.
- **Option 4**: States that the nuclear spindle is formed during both meiotic and mitotic divisions. This is the most accurate option.

4. **Conclusion**: The correct answer is **Option 4**, as the nuclear spindle is formed during both mitotic and meiotic divisions.