How does cytokinesis occur

During which phase of meiosis does cytokinesis occur? Biology The Eukaryotic Cell Meiosis. Monzur R. Apr 23, Explanation: Cell division an animals includes mitosis, in which the nucleus divides, and cytokinesis, in which the cytoplasm divides and daughter cells form. Related questions How does meiosis 1 differ from meiosis 2? What is meiosis? Cytokinesis starts during the nuclear division phase called anaphase and continues through telophase.

A ring of protein filaments called the contractile ring forms around the equator of the cell just beneath the plasma membrane. The contractile ring shrinks at the equator of the cell, pinching the plasma membrane inward, and forming what is called a cleavage furrow. Eventually, the contractile ring shrinks to the point that there are two separate cells each bound by its own plasma membrane.

Further Exploration Concept Links for further exploration cell division telophase meiosis cell anaphase cytoplasm. Although the stages of mitosis are similar for most eukaryotes, the process of cytokinesis is quite different for eukaryotes that have cell walls, such as plant cells. In cells such as animal cells that lack cell walls, cytokinesis follows the onset of anaphase.

A contractile ring composed of actin filaments forms just inside the plasma membrane at the former metaphase plate. The actin filaments pull the equator of the cell inward, forming a fissure. The furrow deepens as the actin ring contracts, and eventually the membrane is cleaved in two Figure 1. Figure 1. During cytokinesis in animal cells, a ring of actin filaments forms at the metaphase plate. The ring contracts, forming a cleavage furrow, which divides the cell in two. In plant cells, Golgi vesicles coalesce at the former metaphase plate, forming a phragmoplast.