In the soldier caste,the process of spermatogenesis included only the spermatogonia,primary spermatocyte and secondary spermatocyte stages;no spermatids or spermatozoa were observed.
兵蚁生殖细胞发育仅有精原细胞、初级精母细胞、次级精母细胞,没有精细胞和精子产生。
一次精母细胞
初期精母细胞
2
医药科学
初级精母细胞
双语例句
1
The prophase of primaryspermatocyte would appear synaptonemal complex, which should been the symbol that the homologous chromosome carried through the change of homologous gene.