1·The structure is closely related with homologous chromosomes synapsis, recombination and segregation.
它与同源染色体联会、遗传交换、染色体分离密切相关。
2·Synapsis (pairing) the association of homologous chromosomes during the prophase stage of meiosis that leads to the production of a haploid number of bivalents.
偶线期时，以同源染色体活跃的、特定的配对(联会)为特征，形成了单倍数的二价染色体。