citokineziszben

Cytokinesis is the final stage of cell division, following mitosis or meiosis, where the cytoplasm of a single eukaryotic cell is divided to form two separate daughter cells. This process is crucial for maintaining the proper number of chromosomes in each daughter cell and ensuring that each new cell receives a complete set of genetic material. Cytokinesis occurs in both animal and plant cells, although the mechanisms differ.

In animal cells, cytokinesis begins with the formation of a contractile ring of actin and myosin filaments at the cell's equator. This ring constricts, pinching the cell membrane inward and eventually separating the two daughter cells. In plant cells, cytokinesis is more complex and involves the formation of a cell plate, a structure composed of vesicles and tubules that grows inward from the cell wall. This cell plate eventually fuses with the plasma membrane, forming a new cell wall and separating the two daughter cells.

Cytokinesis is tightly regulated and coordinated with the events of mitosis. It is essential for the proper functioning of multicellular organisms, as it ensures that each daughter cell receives the correct number of chromosomes and can continue to divide and differentiate. Disruptions in cytokinesis can lead to abnormal cell division and contribute to the development of various diseases, including cancer.