What is the Difference Between Karyokinesis and Cytokinesis?

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Karyokinesis and cytokinesis are two distinct processes that occur during cell division. The main differences between them are:

  1. Meaning: Karyokinesis refers to the division of the nucleus, while cytokinesis refers to the division of the cytoplasm.
  2. Division: In karyokinesis, the nucleus gets divided into two daughter nuclei, whereas in cytokinesis, the cytoplasm, cell organelles, and nuclei divide and are passed on to daughter cells equally.
  3. Dependency: Karyokinesis can occur with or without cytokinesis, while cytokinesis is dependent on karyokinesis.
  4. Process: Karyokinesis is the first step in the M phase of the cell cycle, and it divides the genetic material equally between the two daughter cells. Cytokinesis, on the other hand, is the second step in the M phase of the cell cycle and involves the division of the cytoplasm.

In summary, karyokinesis is the process of nuclear division, where the chromosomes within the nucleus are divided, while cytokinesis is the process of cytoplasmic division, where the cytoplasm and organelles within the cell are divided.

Comparative Table: Karyokinesis vs Cytokinesis

Here is a table outlining the differences between karyokinesis and cytokinesis:

Feature Karyokinesis Cytokinesis
Meaning Division of the nucleus during the M phase of the cell cycle. Division of the cytoplasm during the M phase of the cell cycle.
Process Occurs in the M phase of the cell cycle and is the first step in mitosis. Occurs in the M phase of the cell cycle and is the second step in mitosis, following karyokinesis.
Division The nucleus gets divided into two daughter nuclei. The cytoplasm, cell organelles, and the nuclei divide and are passed on to daughter cells equally.
Dependence Does not depend on cytokinesis. Depends on karyokinesis.
Stage Part of the nucleus of a cell that leads to two daughter nuclei. The process by which the cytoplasm of the parent cell divides into two daughter cells.

In summary, karyokinesis is the division of the nucleus during the M phase of the cell cycle, while cytokinesis is the division of the cytoplasm during the M phase of the cell cycle. Karyokinesis occurs first and does not depend on cytokinesis, whereas cytokinesis depends on karyokinesis.