The beginning of the diplotene stage of prophase I is recognized by the:

Step-by-step solution

According to NCERT, the beginning of diplotene is recognized by the dissolution of the synaptonemal complex and the tendency of the recombined homologous chromosomes of the bivalents to separate from each other except at the sites of crossovers. Formation of the synaptonemal complex occurs earlier, during the zygotene stage. Appearance of recombination nodules is a characteristic feature of the pachytene stage. Complete terminalisation of chiasmata marks diakinesis, the final stage of prophase I. Answer: Dissolutio