CELL CYCLE

• Mitosis only duplicates identical cells.
• Cells are not dividing all the time.
• Cancer cells have the ability to secrete their own growth hormone.
• Checkpoint—a critical control point in the Cell Cycle where ‘stop’ and ‘go-ahead’ signals can regulate the cell cycle.
• During the G1 phase, the cell grows physically and increases the volume of both protein and organelles.
• During the G1 phase, the cell synthesizes a complete copy of the DNA in its nucleus.
• The G1 phase is a period of rapid cell growth and protein synthesis during which the cell prepares itself for mitosis.
• The G1 phase is also known as the Restriction Point.
• The G1 checkpoint ensures that the cell is large enough to divide and that enough nutrients are available to support the resulting daughter cells.
• During the G2 phase, the cell grows physically and increases the volume of both protein and organelles.
• During the G2 phase, the cell synthesizes a complete copy of the DNA in its nucleus.
• The G2 phase is a period of rapid cell growth and protein synthesis during which the cell prepares itself for mitosis.
• The G2 phase is also known as the Transition Phase.
• The G2 checkpoint ensures that DNA replication in S phase has been successfully completed.
• During the Metaphase phase, the chromosomes align on the metaphase plate and the initially indistinct chromosomes begin to condense into visible threads.
• During the Metaphase phase, the chromosomes transfer their genetic information through a process called genetic recombination.