Chromosomes are duplicated to form sister chromatids during interphase in preparation for cell division.
During interphase, the chromosomes are duplicated in the S phase, resulting in each chromosome forming two sister chromatids attached at the centromere region. This process ensures that each chromosome is a duplicated chromosome with two sister chromatids. Additionally, the centrosome is duplicated during interphase, which will later give rise to the mitotic spindle facilitating chromosome movement during mitosis.
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