AP BIOLOGY

Detailed explanation-1: -Cell-cycle checkpoints enable a cell to ensure that important processes, such as DNA replication, are complete [18]. Cell-cycle checkpoints prevent the transmission of genetic errors to daughter cells.

Detailed explanation-2: -Cell cycle checkpoints are surveillance mechanisms that monitor the order, integrity, and fidelity of the major events of the cell cycle. These include growth to the appropriate cell size, the replication and integrity of the chromosomes, and their accurate segregation at mitosis.

Detailed explanation-3: -If errors or damage are detected, the cell will pause at the G 2start subscript, 2, end subscript checkpoint to allow for repairs. If the checkpoint mechanisms detect problems with the DNA, the cell cycle is halted, and the cell attempts to either complete DNA replication or repair the damaged DNA.