Drag True or False to the end of each statement. Crossing over occurs at the ends of chromosomes rather than near the centromeres. Pin By Joanne French On College Academics Meiosis Biology Worksheet Cell Division These crossovers become visible as chiasmata plural. . Its occurrence depends on specific events early in prophase I and it has important consequences for the rest of meiosis and beyond. Prophase I is by far the longest phase of meiosis lasting 13 out of 14 days in miceDuring prophase I homologous maternal and paternal chromosomes pair synapse and exchange genetic information by homologous recombination forming at least one crossover per chromosome. Consider the following statements about crossing over. True Crossing over prevents homologous chromosomes.