1·Objective To investigate the relationship between the first polar body morphology of oocyte and the zygote morphology in pronucleus stage, embryo quality in cleavage stage.
目的探讨卵细胞第一极体形态与原核期受精卵形态、卵裂期胚胎质量的关系。
2·Sporogonium the sporophyte generation in mosses and liverworts. it develops from the zygote and comprises the foot, seta, and capsule. the sporogonium is parasitic on the gametophyte generation.
孢子体：为苔藓和地钱的孢子体世代具有。由受精卵发育而来，包括基足、柄和孢蒴。孢子体是寄生在配子体上的。