There were detestably close synapses between homologous chromosomes during thellateprophase and early metaphase in mitosis of somatic cells.

发现在其有丝分裂的晚期、中期阶段，咯对同源染色体都在会。

The dorsoventral polarity of Drosophila egg is established by means of signaling between the germ line-derived oocyte and the surrounding somatic follicle cells.

果蝇胚胎的发育是四种系统，分别控制头、、后以及背腹的形成。

Conclusion The electrofusion efficiency may he improved by inserting more somatic cells into PVS when the somatic cells have a low electrofusion efficiency with oocytes.

结论低融合效率的体细胞与卵母细胞电融合时可通过增加PVS中体细胞的数目来提高融合效率。