AP BIOLOGY

Detailed explanation-1: -Cytokinesis is the second part of the mitotic phase during which cell division is completed by the physical separation of the cytoplasmic components into two daughter cells.

Detailed explanation-2: -In animals, cell division occurs when a band of cytoskeletal fibers called the contractile ring contracts inward and pinches the cell in two, a process called contractile cytokinesis. The indentation produced as the ring contracts inward is called the cleavage furrow.

Detailed explanation-3: -Mitosis is a fundamental process for life. During mitosis, a cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells.

Detailed explanation-4: -Cytokinesis starts during the nuclear division phase called anaphase and continues through telophase.

Detailed explanation-5: -Thus, cytokinesis can be considered to occur in four stages-initiation, contraction, membrane insertion, and completion. The central problem for a cell undergoing cytokinesis is to ensure that it occurs at the right time and in the right place.