G1, G2 and S phase are the divisions of the interphase i.e. the resting phase of the cell cycle.
A cell cycle has two phases; interphase and M-phase.
During interphase the cell grows and in M-phase it divides.
G1 is the Gap between the M-phase and the S-phase.
G2 is the gap between the S phase and M phase.

DNA replication is confined to the S part of interphase.
Since G1 phase comes before the S phase , we can say that a cell that has duplicated chromosome cannot be in G1 phase.

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4 years ago

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A type of white blood cell that engulfs foreign organisms and infected, damaged, or aged cells, and that is particularly prevale

andreev551 [17]

The white blood cell is called NEUTROPHIL. Neutrophils play important roles in the immune system; they move around the body via the blood stream and when they sense signals that foreign bodies are present, they move to the site of the infection and destroy them. They are among the first set of immune cells that defend the body against infection.

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3 years ago