during which phase of mitosis do the chromosomes align at the middle part of the cell

The phase of mitosis during which the chromosomes align at the middle part of the cell is called metaphase. In metaphase, the chromosomes line up along the metaphase plate, which is an imaginary plane located at the center of the cell. This alignment ensures that each of the duplicated chromosomes will be properly separated and divided between the two daughter cells during the subsequent phase known as anaphase.

The phase of mitosis during which the chromosomes align at the middle part of the cell is called metaphase.