SSC
BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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G1
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S
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G2
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M
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Detailed explanation-1: -During G1, the cell is metabolically active and continuously grows but does not replicate its DNA. G1 is followed by S phase (synthesis), during which DNA replication takes place.
Detailed explanation-2: -S Phase (Synthesis of DNA) Throughout interphase, nuclear DNA remains in a semi-condensed chromatin configuration. In the S phase, DNA replication results in the formation of identical pairs of DNA molecules, sister chromatids, that are firmly attached to the centromeric region.
Detailed explanation-3: -The S phase, occurring between the G1 and G2 phases of the cell cycle, is when DNA replication and much of the DNA repair activity occurs in cells. DNA replication is thought to proceed as large factories, consisting of large clusters of proteins, at the DNA replication fork.