精相题O 卵细麗 初级精母 D(0X I 细胞46.XY 初级柳母细慰 D (届6,XⅩ Puting apart of 丹脱○ Anaphase of 1st 精子 细胞 22X23,Y23x123Y 次级卵母@极体 细胞23X V人 极体 ells resulted from 明f 23,X conditions: 1) maturation of oocyte 2)maturation of spermatozoaconditions: 1) maturation of oocyte 2) maturation of spermatozoa