<P> Cell cycle checkpoints are control mechanisms in eukaryotic cells which ensure proper division of the cell . Each checkpoint serves as a potential point along the cell cycle , during which the conditions of the cell are assessed , with progression through the various phases of the cell cycle occurring when favorable conditions are met . Currently , there are three known checkpoints : the G1 checkpoint , also known as the restriction or start checkpoint or ( Major Checkpoint ) ; the G2 / M checkpoint ; and the metaphase checkpoint , also known as the spindle checkpoint . </P>
<P> Cell cycle checkpoints are control mechanisms in eukaryotic cells which ensure proper division of the cell . Each checkpoint serves as a potential point along the cell cycle , during which the conditions of the cell are assessed , with progression through the various phases of the cell cycle occurring when favorable conditions are met . Currently , there are three known checkpoints : the G1 checkpoint , also known as the restriction or start checkpoint or ( Major Checkpoint ) ; the G2 / M checkpoint ; and the metaphase checkpoint , also known as the spindle checkpoint . </P>
how many checkpoints are in the cell cycle
how many checkpoints are in the cell cycle
three known checkpoints
three known checkpoints