Karyochorisis stands for

Options

A. Mitosis with internuclear spindle formation
B. Mitosis with intranuclear spindle formation
C. Mitosis without spindle formation
D. Meiosis with internuclear spindle formation

Answer

**Step-by-Step Solution:**

1. **Understanding Karyokinesis**: Karyokinesis refers to the process of nuclear division during cell division. The term is derived from two Greek words: "karyo," meaning nucleus, and "kinesis," meaning movement. Thus, karyokinesis literally means the movement or division of the nucleus.

2. **Relation to Mitosis**: Karyokinesis is a crucial part of mitosis, which is the type of cell division that results in two identical daughter cells. Mitosis involves several stages: prophase, metaphase, anaphase, and telophase, during which the nucleus divides.

3. **Spindle Formation**: During karyokinesis, spindle fibers form within the nucleus. These spindle fibers are essential for the movement of chromosomes during cell division. They help in aligning the chromosomes and pulling them apart to opposite poles of the cell.

4. **Cytokinesis**: After karyokinesis, the process of cytokinesis occurs, where the cytoplasm of the cell divides, resulting in two separate cells. However, karyokinesis specifically refers to the division of the nucleus.

5. **Identifying the Correct Option**: The question provides multiple-choice options regarding what karyokinesis stands for. Based on our understanding, karyokinesis is best described as "mitosis with intranuclear spindle formation," as it involves the division of the nucleus with the help of spindle fibers formed within the nucleus.

**Final Answer**: Karyokinesis stands for mitosis with intranuclear spindle formation.

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