in what stage of the cell cycle do chromosomes make identical copies of themselves

Chromosomes make identical copies of themselves during the S phase (Synthesis phase) of interphase in the cell cycle.

Quick Scoop

During the S phase, the cell copies all of its DNA so that each chromosome is duplicated into two identical sister chromatids.

These sister chromatids stay attached at the centromere and will later separate during mitosis so each new daughter cell receives the same genetic information.

In short: in what stage of the cell cycle do chromosomes make identical copies of themselves?
Answer: the S phase of interphase.

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