synapsis is the process of pairing that occurs during the zygotene stage of meiotic Prophase I . This specific association takes place between two homologous chromosomes . The pairing is accompanied by the formation of a structure called the synaptonemal complex, and the resulting pair is referred to as a bivalent or a tetrad . Understanding these precise meiotic events is a high-priority strategy for medical aspirants, as NCERT textbooks provide the foundation for approximately 95% of NEET Biology questions .