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Cell Cycle ix, 9th kpk Biology Notes Grade 9
Q1: What is the cell cycle? Describe various phases of the interphase of the cell cycle with a diagram.
Ans: Cell cycle: The Serious of events that take place in a eukaryotic cell leading to its division is called cell cycle.
Periods of the cell cycle:
There are two broad periods of the cell cycle
A. Interphase
B. M-Phase (division phase)
I-Interphase:
The period between the end of one mitosis and the start of the next mitosis is called interphase. Typically, interphase lasts for at least 90% of the total time required for the cell cycle therefore interphase is called the longest phase/ resting phase/ or growth phase of the cell cycle.
Sub Phase of interphase: –
Interphase has three sub-phases.
- i. G1-Phase:
- It is the first sub-phase of the interphase.
