Answer :
The mitotic spindle plays a critical role during the SEPARATION of sister chromatids.
The cell cycle can be divided into two phases: interphase and M (mitotic) phase.
The mitotic spindle is a cytoskeletal structure composed of microtubules (i.e. tubulin proteins), generated during the start of the M phase of the cell cycle (i.e., prophase).
This structure (mitotic spindle) extends from the centrioles in all possible directions.
The mitotic spindle plays a fundamental role by ensuring the correct segregation of sister chromatids into daughter cells during anaphase.
In conclusion, the mitotic spindle plays a critical role during the SEPARATION of sister chromatids.
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