Correct Answer - B
The separation of the paired homologus chromosomes begains in diplotene stage. In this phase, the dissolution of synaptonemal complex begains. The recombined homologous chromosomes of the bivalents separate from each other except at the sites of crossovers.
Zygotene is the second state of prophase I of meiosis. It is associated with the formation of synapsis. Next stage is pachytene during which crossing over occurs between non-sister chromatids of the homologus chromosomes. Diakinesis is the final stage of meiotic prophase-I. This is marked by terminalisation of chiasmata.
