The dissolution of synaptonemal complex begins during 

Synaptonemal complex is a ladder-like structure formed by proteins between the paired homologous chromosomes during prophase I of meiosis I. It involves pairing up of homologous chromosomes and exchange of genetic material. It is further divided into 5 substages. Diplotene is the 4th substage of prophase I of meiosis I, where synaptonemal complex begins to disassemble, thus leading to separation of paired homologs. However, the paired homologs remain connected at specific points called chiasmata (X shaped), where genetic material has been exchanged.
(1) Pachytene is a substage of prophase I of meiosis I. It comes next to zygotene and before diplotene. Exchange of genetic material between paired homologs takes place at this stage (crossing over).
(3) Diakinesis is the last stage of prophase I in meiosis I. Synaptonemal complex is completely dissolved by this stage. This is marked by terminalisation of chiasmata.
(4) Leptotene is the fi rst stage of prophase I in meiosis, it is characterised by the condensation of chromosomes and bouquet formation.