While observing a cell undergoing meiosis I under a microscope, a student notices that the recombined homologous chromosomes of the bivalents are separating from each other, but they remain attached at specific points to form distinct X-shaped structures. Which of the following events will characterize the stage that immediately follows the currently observed stage?

Step-by-step solution

The formation of distinct X-shaped structures (chiasmata) and the tendency of recombined homologous chromosomes to separate from each other except at the sites of crossovers are characteristic features of the diplotene stage of prophase I. The stage that immediately follows diplotene is diakinesis. Diakinesis is characterized by the terminalisation of chiasmata. Dissolution of the synaptonemal complex occurs during the current stage (diplotene), the appearance of recombination nodules occurs during the preceding st