精子细胞

• During male gametogenesis , the spermatogonia became primary spermatozoa through mitosis , and then became fourth equivalent cytoplasm , round sperm through meiosis . after maturation , they participated in embryo development with the mature oocyte through fertilization . but in female gametogenesis , the primary oocyte formed a matured egg and 1 ~ 3 polar bodies ( pb )
  雄性动物精子发生过程中精原细胞最后一次有丝分裂形成二倍体精母细胞后，经过两次减数分裂形成了四个含等量细胞质、圆形的精子细胞，最终发育成四个具有正常生理功能的精子，与成熟卵母细胞受精后参与胚胎发育。