CELL STRUCTURES AND FUNCTION
CELL CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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G1, S, G2, M
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S, G1, G2, M
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G1, M, G2, S
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M, G1, S, G2
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Detailed explanation-1: -The cell cycle contains 4 stages; Gap 1 (G1) phase, synthesis (S) phase, gap 2 (G2) phase and mitosis (M) phase.
Detailed explanation-2: -The correct order of phases of the cell cycle is G1 → S → G2 → M.
Detailed explanation-3: -Interphase is composed of G1 phase (cell growth), followed by S phase (DNA synthesis), followed by G2 phase (cell growth). At the end of interphase comes the mitotic phase, which is made up of mitosis and cytokinesis and leads to the formation of two daughter cells.
Detailed explanation-4: -In eukaryotes, the cell cycle consists of four discrete phases: G1, S, G2, and M. The S or synthesis phase is when DNA replication occurs, and the M or mitosis phase is when the cell actually divides. The other two phases-G1 and G2, the so-called gap phases-are less dramatic but equally important.
Detailed explanation-5: -So, the correct answer is ‘ G1→S→G2→M’