Mitosis is a dynamic process. For purposes of description it is typically broken down into phases which are briefly described below:
Prophase: Chromosomes condense; nuclear membrane breaks down; mitotic spindle begins to form; kinetochores begin to migrate to demarcate the two poles.
Prometaphase: Spindle apparatus completes formation; sister chromatids are attached to spindle fibers via polar microtubules.
Metaphase: Chromosomes are aligned at the center of the cell.
Anaphase: Homologous chromosomes separate and migrate to opposite poles.
Telophase: Nuclear membrane forms around each set of chromosomes; chromosomes decondense.
Although not a part of mitosis, the division of the cytoplasm, called cytokinesis, typically occurs after anaphase.
Because of your expert knowledge of cell division, you and your colleagues have been hired by an established online, user-written encyclopedia as content editors. Your job is to read entries submitted on topics about cell division and edit them for accuracy.
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