AP BIOLOGY

Detailed explanation-1: -During metaphase I, all of the doubled homologous chromosome pairs line up along the midline of the cell between the two centrioles. During anaphase I, the homologous chromosome pairs separate and are pulled to opposite poles of the cell by spindle fibers attached to the centrioles.

Detailed explanation-2: -Metaphase II: During metaphase, each of the 23 chromosomes line up along the center of the cell at the metaphase plate.

Detailed explanation-3: -In prophase I of meiosis, the homologous chromosomes form the tetrads. In metaphase I, these pairs line up at the midway point between the two poles of the cell to form the metaphase plate.

Detailed explanation-4: -Metaphase I: Spindle fibers attach to the paired homologous chromosomes. The paired chromosomes line up along the equator (middle) of the cell. This occurs only in metaphase I. In metaphase of mitosis and meiosis II, it is sister chromatids that line up along the equator of the cell.

Detailed explanation-5: -Metaphase II: The paired chromosomes line up. Anaphase II: The chromatids split at the centromere and migrate along the spindle fibers to opposite poles.