Prophase I of meiosis involves the condensing and coiling of homologous chromosome pairs and the possible exchange of genetic material between nonsister chromatids through crossing over. During anaphase I, the homologous chromosome pairs separate and move to opposite ends of the cell. This results in two daughter cells with half the number of chromosome sets as the original cell. Anaphase II then separates the sister chromatids, resulting in four haploid daughter cells each with single chromosomes.