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Which CDK triggers origin firing?(a) G1(b) G1-S(c) S(d) MI had been asked this question by my school teacher while I was bunking the class.This intriguing question comes from Cell Cycle Stages topic in division Cancer Biology & Methods in Cytogenetics of Cytogenetics

Answer»

Correct choice is (C) S

The explanation: S CDK phosphorylates the residues on MCM and on ORC THUS triggering ORC firing leading to DNA REPLICATION in the cell. ORC is FIRED once and only once during cell cycle.



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