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Question
Describe the events taking place during interphase.
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Solution
Even though it is referred to be the resting phase, the interphase is highly metabolically active. It is the period of time when the cell gets ready to divide by going through a systematic process of both cell growth and DNA replication.
G1 (Gap 1) phase
S (Synthesis) phase
G2 (Gap 2) phase
The G1 phase refers to the period between the mitosis of the preceding cell cycle and the commencement of DNA replication. In the G1 phase, the cell is metabolically active and undergoes continuous growth without DNA replication. The synthesis phase, or S phase, denotes the time frame in which DNA replication or synthesis occurs. DNA doubles in each cell throughout this period. In animal cells, centrioles duplicate in the cytoplasm while DNA replication takes place in the nucleus during the S phase. DNA synthesis ceases during the G2 phase, but protein and RNA synthesis continues as the cell grows in preparation for mitosis.
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