Cell Cycle Stage Durations

Steps:

• Identify the four main stages: G1, S, G2 (interphase), and M (mitosis).
• Recall that interphase occupies ~90% of the cycle, with G1 longest, followed by S, G2, and M shortest.
• Compare diagram times to standard proportions: G1 > S > G2 > M.
• Select option matching these relative durations.

Why C is correct:

• C aligns with the biological fact that interphase (G1+S+G2) totals 19-24 hours in a 24-hour cycle, per standard cell cycle models.

Why the others are wrong:

• A overemphasizes mitosis, ignoring its brief 1-hour duration.
• B reverses interphase and mitosis times, contradicting observed proportions.
• D equates all stages, violating unequal phase lengths in eukaryotic cells.

Not enough information on exact diagram details, but C fits typical representations.

Final answer: C