How does cytokinesis occur in animal cells?

How does cytokinesis occur in animal cells?

• A. Through the formation of a cell plate
• B. By forming a cleavage furrow
• C. By splitting the nucleus
• D. Through binary fission

Answer: (B)

In animal cells, cytokinesis occurs through the formation of a cleavage furrow. This process begins during the late stages of mitosis, specifically in telophase, when the cell is ready to divide. The cleavage furrow is an indentation that forms around the middle of the parent cell. This indentation is facilitated by a contractile ring composed of actin and myosin, which are types of cytoskeletal proteins. As the contractile ring contracts, it pulls the plasma membrane inward, progressively pinching the cell into two separate daughter cells. This method of division is distinct from the way cytokinesis occurs in plant cells, where a cell plate forms instead. The cleavage furrow is essential for ensuring that the daughter cells are properly separated and that each receives the appropriate organelles and cytoplasm during cell division. This is a crucial step in the cell cycle, ensuring that cell division occurs efficiently and accurately in animal cells.

In animal cells, cytokinesis occurs through the formation of a cleavage furrow. This process begins during the late stages of mitosis, specifically in telophase, when the cell is ready to divide.

The cleavage furrow is an indentation that forms around the middle of the parent cell. This indentation is facilitated by a contractile ring composed of actin and myosin, which are types of cytoskeletal proteins. As the contractile ring contracts, it pulls the plasma membrane inward, progressively pinching the cell into two separate daughter cells.

This method of division is distinct from the way cytokinesis occurs in plant cells, where a cell plate forms instead. The cleavage furrow is essential for ensuring that the daughter cells are properly separated and that each receives the appropriate organelles and cytoplasm during cell division. This is a crucial step in the cell cycle, ensuring that cell division occurs efficiently and accurately in animal cells.