AP BIOLOGY

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: -In the third step of mitosis, called metaphase, each chromosome lines up in a single file line at the center of the cell.

Detailed explanation-3: -Spindle fibers align the chromosomes along the middle of the cell nucleus. This line is referred to as the metaphase plate.

Detailed explanation-4: -In metaphase II of meiosis II, it is sister chromatids that line up along the equator of the cell.