Multiple Choice
In order to push the cell through the G₁ checkpoint, the cyclin-dependent kinases have to phosphorylate:
A) The p53 protein.
B) The retinoblastoma protein pRb.
C) The MAP kinases.
D) The Ras protein.
E) The Bcl2 protein.
Correct Answer:

Verified
Correct Answer:
Verified
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