In G2, there are typically high levels of the mitotic cyclin. Why is cdc2 not active during G2 if the mitotic cyclin is present?
A. Cdc2 requires ubiquitination to be activated.
B. Cdc2 does not bind to the mitotic cyclin.
C. Cdc2 is also regulated by phosphorylation.
D. Cdc2 also has to bind to cohesin to be activated.
Answer: C
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