The prophase of primary spermatocyte would appear synaptonemalcomplex, which should been the symbol that the homologous chromosome carried through the change of homologous gene.
黄颡鱼初级精母细胞的前期出现联会复合体，应是同源染色体之间进行同源基因交换的标志。
3
The formation of a synaptonemalcomplex starts at the attachment plaque.