CELL STRUCTURES AND FUNCTION
CELL DIVISION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Interphase of mitosis
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Interphase 1
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Interphase 2
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None of the above
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Detailed explanation-1: -Replication of the nucleus does not happen during interphase.
Detailed explanation-2: -Thus, DNA replication occurs in the S-phase of the interphase.
Detailed explanation-3: -The interphase of a normal cell cycle will thus, consist of the G1 (Gap 1) phase, S (Synthesis) phase, and G2 (Gap 2) phase. The S phase is the phase in which replication of DNA will take place which is then followed by histones synthesis. This is the phase taking place between the G1 phase and G2 phase.
Detailed explanation-4: -G2 phase: During the pre-mitotic gap phase (G2) all the metabolic activities related to the growth of cytoplasm and of its constituent organelles and macromolecules are performed. Protein and RNA synthesis takes place in this phase, however, DNA synthesis stops.
Detailed explanation-5: -reduction of cell size is the correct answer. Note: During interphase reduction of cell size does not occur instead the cell grows and DNA replicates in an orderly manner.