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G1 to s transition is carried out by 1. MPF +cdc2 kinase 2. G1 cyclin + cdc2 kinase 3. G1 cyclin only 4. cdc2 kinase only |
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Answer» Between G1 and S phase, three DNA damage CHECKPOINTS occur to ENSURE proper growth and SYNTHESIS of DNA prior to CELL division. DAMAGED DNA during G1, before entry into S phase, and during S phase result in the expression of ATM/R protein. |
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