PATHOLOGY

Detailed explanation-1: -Cytokinesis is the end of cell cycle and is not a checkpoint that controls progress…

Detailed explanation-2: -Each step of the cell cycle is monitored by internal controls called checkpoints. There are three major checkpoints in the cell cycle: one near the end of G1, a second at the G2/M transition, and the third during metaphase.

Detailed explanation-3: -After the cell has completed the M phase, both daughter cells enter the G1 phase again. From here, they can either continue the cell cycle and divide again or leave it and stop dividing. A cell that exits the cell cycle enters the G phase, where it is still fully functional but does not divide anymore.

Detailed explanation-4: -Cell-cycle checkpoints prevent the transmission of genetic errors to daughter cells. There exist three major cell-cycle checkpoints; the G1/S checkpoint, the G2/M checkpoint, and the spindle assembly checkpoint (SAC).