Question

during which phase of the cell cycle are the chromosomes duplicated?
multiple choice
g₀ phase
mitosis
s phase
g₁ phase
g₂ phase

Explanation:

The cell cycle consists of interphase (G₁, S, G₂) and mitosis. Chromosome duplication occurs during the S (synthesis) phase. In G₀, the cell is in a resting state. In G₁, the cell grows. In G₂, the cell prepares for mitosis. Mitosis is for cell division, not chromosome duplication.

Answer:

S phase