PATHOLOGY

Detailed explanation-1: -Metaphase. During metaphase, spindle fibers attach to the centromere of each pair of sister chromatids (see Figure below). The sister chromatids line up at the equator, or center, of the cell. This is also known as the metaphase plate.

Detailed explanation-2: -After metaphase is complete, the cell enters anaphase. During anaphase, the microtubules attached to the kinetochores contract, which pulls the sister chromatids apart and toward opposite poles of the cell (Figure 3c). At this point, each chromatid is considered a separate chromosome.

Detailed explanation-3: -In metaphase of mitosis and meiosis II, it is sister chromatids that line up along the equator of the cell.

Detailed explanation-4: -The correct answer: The phase of mitosis in which the chromosomes line up on the equator of the cell is e. metaphase.