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NBME 24 Answers

nbme24/Block 2/Question#9

In which of the following stages of the cell cycle ...

G2

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mousie  http://www.sparknotes.com/biology/cellreproduction/cellcycle/section3/page/2/ +2  
fahmed14  Cyclins help regulate cell cycle phases. They help with checkpoints before progression to the next phase of a cell cycle. Therefore the checkpoint before mitosis would be in G2 and probably where mitotic specific cyclins are synthesized +4  
artist90  https://en.wikipedia.org/wiki/Cyclin . 4 types of Cyclins and when they rise and fall. +  

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submitted by sweetmed(27),

Cyclin A,D,E and for G1 to S transition [made in G1]. Cyclin B is for G2 to M transition[made in G2].