Question.
Describe the events taking place during interphase.
Describe the events taking place during interphase.
Solution:
Interphase involves a series of changes that prepare a cell for division. It is the period during which the cell experiences growth and DNA replication in an orderly manner. Interphase is divided into three phases.
(i) $G_{1}$ phase
(ii) $S$ phase
(iii) $\mathrm{G}_{2}$ phase
$\mathrm{G}_{1}$ phase $-$ It is the stage during which the cell grows and prepares its DNA for replication. In this phase, the cell is metabolically active.
S phase - It is the stage during which DNA synthesis occurs. In this phase, the amount of DNA (per cell) doubles, but the chromosome number remains the same.
$\mathrm{G}_{2}$ phase $-$ In this phase, the cell continues to grow and prepares itself for division. The proteins and RNA required for mitosis are synthesised during this stage.
Interphase involves a series of changes that prepare a cell for division. It is the period during which the cell experiences growth and DNA replication in an orderly manner. Interphase is divided into three phases.
(i) $G_{1}$ phase
(ii) $S$ phase
(iii) $\mathrm{G}_{2}$ phase
$\mathrm{G}_{1}$ phase $-$ It is the stage during which the cell grows and prepares its DNA for replication. In this phase, the cell is metabolically active.
S phase - It is the stage during which DNA synthesis occurs. In this phase, the amount of DNA (per cell) doubles, but the chromosome number remains the same.
$\mathrm{G}_{2}$ phase $-$ In this phase, the cell continues to grow and prepares itself for division. The proteins and RNA required for mitosis are synthesised during this stage.