During which stage of Prophase I does the dissolution of the synaptonemal complex begin, accompanied by the appearance of X-shaped structures called chiasmata?

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The beginning of the diplotene stage is recognized by the dissolution of the synaptonemal complex. During this stage, the recombined homologous chromosomes of the bivalents tend to separate from each other except at the sites of crossovers. These points of attachment form X-shaped structures known as chiasmata. Answer: Diplotene