Cytokinesis
rest of the cell (cytoplasm) divides
Cytokinesis is the final stage of the cell cycle, which occurs after the process of mitosis. It is the process by which a single cell divides its cytoplasm and organelles into two separate daughter cells. During cytokinesis, a contractile ring of actin and myosin filaments forms around the cell, causing the cell membrane to pinch inward and eventually split the cell in two.
In animal cells, the contractile ring forms around the equator of the cell and contracts inwards, eventually separating the two daughter cells. In plant cells, cytokinesis is a bit more complex due to the presence of a cell wall. In plant cells, a structure called the cell plate forms, which eventually grows outward and merges with the cell wall to form a new cell membrane.
Cytokinesis is a critical process for cellular reproduction, as it ensures that genetic material is evenly distributed between the two daughter cells. Defects in cytokinesis can lead to a range of problems, including chromosomal abnormalities and cancer. Therefore, it is crucial for cells to undergo this process correctly to ensure proper growth and development.
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