What are the three checkpoints where the cell divides?

Answer 1

The three checkpoints are...

G1 (restriction) checkpoint: where the decision is made whether the cell will be divided, delayed division or enter the resting stage

G2 checkpoint: which checks the success of DNA replication from the S phase

M checkpoint: the process of mitosis is assessed (whether it was a success)

If at any time the cell doesn't pass the checkpoints, the cells stops and repairs so that it can continue along the cell cycle.

Answer 2

G1-decides if cell will divide based on the size of the cell, and the environment the cell is in (anchorage dependence and density dependent inhibition)

(If the cell decides not to divide it enters G0 where it simply doesn't divide)

G2-checks DNA replication (it also rechecks the size of the cell and the environment the cell is in)

M- checks to make sure that the sister chromatids are lined up properly and thus will separate and divide properly

If the cell doesn't pass at G1, it enters G0, the non-dividing phase

If the cell doesn't pass at the G2 or M checkpoints, the cell goes back and fixes whatever it needs to fix so that it can continue in the cell cycle

Answer 3

The cell cycle is required for cell growth and cell division into two daughter cells. A eukaryotic cell cannot divide unless it replicates its genome (DNA) and then separates the duplicated genome. To achieve these tasks cells must perform DNA synthesis and mitosis. The cell cycle is an ordered set of events. The G1 phase stands for "GAP-1" and is required for cell growth and preparation of DNA synthesis. The S-phase stands for "Synthesis" and replicates the genome. The G2 phase is "GAP-2" and needed for cell growth and preparation for mitosis. The last phase is M and it stands for "Mitosis" in which cells segregate duplicated chromosomes.

Answer 4

Interphase, Mitosis, and Cytokinesis. Interphase is the part of the cell cyle during which a cell is not dividing. Mitosis is another part of the cell cycle during which the nucleus divides. Cytokinesis is the division of the parent cell's cytoplasm, including mitochondria and other structures.