AP BIOLOGY

Detailed explanation-1: -So, during metaphase I, homologue pairs-not individual chromosomes-line up at the metaphase plate for separation. The phases of meiosis I. Prophase I: The starting cell is diploid, 2n = 4. Homologous chromosomes pair up and exchange fragments in the process of crossing over.

Detailed explanation-2: -Metaphase I. During metaphase I, the homologous chromosomes are arranged in the center of the cell with the kinetochores facing opposite poles. The homologous pairs orient themselves randomly at the equator.

Detailed explanation-3: -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-4: -The paired chromosomes line up along the equator of the cell. This occurs only in metaphase I.