PATHOLOGY

Detailed explanation-1: -Cytokinesis in animal cells is accomplished through the “outside-in” constriction of a contractile ring, which forms a cleavage furrow that eventually “pinches” the two cells apart. Because plant cells are surrounded by a rigid cell wall, they cannot divide in this fashion.

Detailed explanation-2: -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.

Detailed explanation-3: -Telophase: The single cell then pinches in the middle to form two separate daughter cells each containing a full set of chromosomes within a nucleus. This process is known as cytokinesis.