Home
Class 11
BIOLOGY
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 druing `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.
Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion: Prophase is the first stage of mitosis which follows S and G_(1) phases of interphase. Reason: Prophase is marked by the initiation of clusters of chromosomes.

Assertion: Some cells enter G_(0) phase leading to inactivation of cell cycle. Reason: G_(0) phase occurs due to non-availability of mitogen and energy rich compounds.

During the G1 phase of cell division

The DNA content of individual cells and the number of cells in each phase of a cell cycle" can be determined using flow cytometry. Which of the following combinations of "phase of a cell cycle and its corresponding DNA content" can be considered normal? (i) Diploid cells found in the G_(0) or G_(1) phase. (ii) Cells with twice the normal DNA content in the early M phase. (iii) Cells with twice the normal DNA content in the G_(2) phase.

Which phase comes in between the G_1 and G_2 phase of cell cycle?

Select the correct statement about G_(1) phase.

Cell in G_0 Phase of cycle cell

Assertion: Cell growth results in disturbing the ratio between the nucleus and cytoplasm. Reason: Mitosis helps the cell to restore the nucleocytoplasmic ratio:

Which is the cytoplasmic factor that is responsible for the cell to enter from G_2 phase M phase?

Assertion : The constantly dividing cells both at the root apex and the shoot apex, show the meristematic phase of growth. Reason : The cells of this region are rich in protoplasm and are without nuclei.