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Assertion: G(1) phase is the interval be...

Assertion: `G_(1)` phase is the interval between mitosis and initiation of DNA replication.
Reason: The cell is metabolically inactive during `G_(1)` phase.

A

If both assertion and reason are true and reason is the correct explantion of assertion

B

If both assertion and reason are true but reason is not the correct explnantion of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
C
`G_(1)` phase is also known as first growth phase or post mitotic gap phase. It is the phase between end of mitotic phase of previous cell and initiation of S-phase of next mitotic phase. During `G_(1)` phase the cell is metabolically active and continously grows. In this phase different types of RNA (mRNA,fRNA and rRNA) and proteins are synthesised.
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The phase corresponding to the interval between mitosis and initiation of DNA replication-

Which of the following correctly related with given diagram ? (i) sequence of cell cycle = G_1 - S - G_2 - M phase (ii) A cell exist G_1 phase to enter an inactive stage - Quiescent stage or G_0 (iii) G_1 phase is the interval between mitosis and Initiation of DNA replication . (iv) In G_1 phase DNA synthesis occurs.

Knowledge Check

  • Interval between mitosis and intiation of DNA replication is called :-

    A
    `G_(2)`- Phase
    B
    `G_(1)`-phase
    C
    Karyokinesis
    D
    S-phase

  • Which phase corresponds to the interval between mitosis and initiation of DNA replication?

    A
    Gap `1//G_(1)` phase
    B
    Gap `2//G_(2)` phase
    C
    Synthesis/S phase
    D
    M phase

  • Which phase corresponds to the interval between the mitosis and initiation of DNA replication -

    A
    S-phase
    B
    M-phase
    C
    G1-phase
    D
    `G_(2)`-phase

    • Similar Questions

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    Which phase corresponds to the interval between the mitosis and initiation of DNA replication? (a.) S phase (b.)M phase (c.)G_(1) phase (d.)G_(2) phase

    Analyze the statements and select the correct option. a) The cell cycle gets completed in G1-S-G2-M phase. b) G1 phase corresponds to the interval between mitosis and initiation of DNA replication. c) In the G1 phase, the cell is metabolically active and DNA replicates.

    Which of the following phases correspond to the interval between mitosis and initiation of DNA replication

    Cell in G_(0) phase

    Gap between division phase and start of DNA-replication is called :-

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