In the given options, which one is a characteristic feature of the zygotene stage of prophase-I observed in meiosis?

Step-by-step solution

Zygotene stage is observed in prophase-I of meiosis-I divisional phase. In this stage, chromosomes start pairing together forming an association called synapsis. This pairing is observed between homologous chromosomes. This synapsis results in formation of a complex structure called synaptonemal complex. Crossing over is observed in pachytene stage of prophase-I, where exchange of genetic materials occurs. In diakinesis, the paired of chromosomes separate resulting in terminalisation of chiasmata. Chiasmata is form