AP BIOLOGY

Detailed explanation-1: -Meiosis II is a mitotic division of each of the haploid cells produced in meiosis I. During prophase II, the chromosomes condense, and a new set of spindle fibers forms. The chromosomes begin moving toward the equator of the cell.

Detailed explanation-2: -Prophase II: During prophase II, the chromosomes begin to recondense and spindle fibers begin to form once again. These spindle fibers seek out the sister chromatids that are present in the cell. Spindle fibers from one side of the cell attach to one of the sister chromatids.

Detailed explanation-3: -Crossing Over Crossing over, as related to genetics and genomics, refers to the exchange of DNA between paired homologous chromosomes (one from each parent) that occurs during the development of egg and sperm cells (meiosis).

Detailed explanation-4: -Explanation: During prophase I, homologous chromosomes pair with each other and exchange genetic material in a process called chromosomal crossover. The exchange occurs in segments over a small region of homology (similarity in sequence, ie., the same alleles).