At which phase of the cell cycle do centrioles begin to move apart in animal cells?

Prophase

Explanation:

Prophase is the first phase in the cell division, this stage occurs after DNA has been replicated in the interphase. During prophase, the centrioles migrate to opposite poles in the cell

Prophase

Explanation:

The centrioles in animal cells begin to move apart at the prophase stage of the cell cycle.

At the prophase stage, the nuclear membrane of the cell dissolves or breaks down and the genetic materials condense. They become visible under the microscope as chromosomes.

Also during this stage, the centrioles start their movement towards the opposite poles of the cell with the initiation of spindle formation on each.