In a mammalian cell the longest and the most active phase of the cell cycle is :

S p h a s e

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G_{1}

Phase

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G_{2}

Phase

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None of these

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Solution

The correct option is A $S p h a s e$
S phase is the synthesis phase in which the DNA gets replicated. It is the longest and active phase of the cell cycle and it takes nearly 80 minutes of the whole 150 minutes cell cycle process.

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If the cell cycle is restricted in $G_{1}$ phase of cell, the condition is known as -

If the cell cycle is restricted in $G_{1}$ phase of cell, the condition is known as

G₁, G₂ and S phases are seen in which phase of the cell cycle?

_{1}

_{2}

G_{1}

G_{2}

18

G_{1}

_{2}

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