How would the cell cycle be affected if you removed the phosphorylation sites in the Rb proteins ?

Bio-Chemistry (M.Phil./Ph.D.) 2015 Panjab University Entrance Exam With Answers

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21.

A: The cell cycle would not be affected because pRb is not phosphorylated normally

B: The cell cycle would be blocked in G1.

C: The cell cycle would be blocked in G2.

D: The cell cycle would be shorter.

The answer is: B

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