For Each of the Following Sentences, Fill in the Blanks

For each of the following sentences, fill in the blanks with the best word or phrase selected from the list below.Not all words or phrases will be used; each word or phrase should be used only once.
$\begin{array}{lll}\mathrm{APC} & \mathrm{G}_{2} \text { phase } & \text { metaphase } \\\text { Cdks } & \text { interphase } & \text { microtubules } \\\text { condensation } & \text { intraphase } & \text { mitosis } \\\text { cytokinesis } & \text { kinesins } & \text { myosins } \\\text { meiosis } & \mathrm{M} \text { phase } & \mathrm{S} \text { phase } \\\mathrm{G}_{1} \text { phase } & \mathrm{M}-\mathrm{Cdk} & \mathrm{S}-\mathrm{Cdk} \\\mathrm{G}_{1}-\mathrm{Cdk} & &\end{array}$

The cell cycle consists of an alternation between __________, which appears as a period of dramatic activity under the microscope, and a preparative period called __________, which consists of three phases called __________, __________, and __________.During M phase, the nucleus divides in a process called __________, and the cytoplasm splits in two in a process called __________.The cell-cycle control system relies an increase in the activity of __________ to trigger DNA replication.Inactivation of __________ is required to exit from M phase after chromosome segregation.