In G₂,there Are Typically High Levels of the Mitotic Cyclin

question 61

Multiple Choice

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 is also regulated by phosphorylation.
• B)Cdc2 does not bind to the mitotic cyclin.
• C)Cdc2 requires ubiquitination to be activated.
• D)Cdc2 also has to bind to cohesin to be activated.