Final answer:
Geminin is degraded during the G2 phase of the cell cycle, which is dedicated to preparing the cell for mitosis and cytokinesis.
Step-by-step explanation:
Geminin is degraded during the cell cycle in the G2 phase. The G2 phase is the shortest phase of interphase and is dedicated to preparing the cell for the next round of mitosis and cytokinesis. During the G2 phase, the cell synthesizes proteins necessary for chromosome manipulation, duplicates some cell organelles, and dismantles the cytoskeleton to provide resources for the mitotic phase. Geminin degradation is important for allowing the cell to progress through the cell cycle and enter the mitotic phase.