Final answer:
Anaphase is the phase of mitosis where sister chromatids separate and daughter chromosomes move to opposite poles of the cell.
Step-by-step explanation:
The phase of mitosis that involves the separation of the sister chromatids and the movement of the daughter chromosomes to opposite poles is known as anaphase. During anaphase, each sister chromatid, now referred to as a chromosome, moves to one pole of the cell, while the other moves to the opposite pole. This process ensures that each new daughter cell will contain an identical set of chromosomes.