4.合子(ygote): 精子与卵子结合形成雌性原核与雄性原核 的共同体,尚未进行卵裂。 First polar body Cortical Female Syngamy reaction pronucleus Cleavage furTow Cortical Male granules pronucleus Second Activated spermatozoa polr哈子
4.合子(zygote): 精子与卵子结合形成雌性原核与雄性原核 的共同体,尚未进行卵裂。 合子
5、受精卵(ygote): 精子和卵子结合形成合子,合子进行卵 裂所形成的结构。 First polar body Cortical Female Syngamy reaction pronucleus Cleavage furrow Cortical Male granules pronucleus Second Activated polarbody 受精卵 spermatozoa
5、受精卵(zygote): 精子和卵子结合形成合子,合子进行卵 裂所形成的结构。 受精卵
受精过程The Process-Egg ()Capacitation(获能) The sperm ② The sper'g acrosomal Nucleus enzumes digest Neck (2)Hyperactivation(卵活化) the egg (3)zona binding(透明带结合) (4)acrosome reaction Ptoteibs on the cetm (顶体反应) head bind to receptors (5)zona penetration (穿过透明带) ④ (6)sperm-oocyte membrane fusion Vitelline layer Receptor protein molecule (精卵膜融合) Jelly coat the sperm and egg fuse (T)sperm engulfed(精子卷入) Egg Nucleus (8)decondensation of sperm nucleu EGG CELL (精子核松散) The nuclei of the sper and egg fuse⑦ (5)The per nucleus enters the (9)formation of male pronucleus egg cytoplacm (雄原核形成) gygote Nucleus
受精过程The Process - Egg (1) Capacitation(获能) (2) Hyperactivation(卵活化) (3) zona binding (透明带结合) (4) acrosome reaction (顶体反应) (5) zona penetration (穿过透明带) (6) sperm-oocyte membrane fusion (精卵膜融合) (7) sperm engulfed (精子卷入) (8) decondensation of sperm nucleu (精子核松散) (9) formation of male pronucleus (雄原核形成)
Fertilization of a Xenopus Egg First polar body 2nd meiotic spindle Sperm dnrdsurDere Cot 受精视频
受精 视频
(二)配子与受精卵的运行 1、射精: 公畜与母畜交配,将精子通过尿生殖道排出体外, 输送到母畜生殖道的过程。 糖
(二) 配子与受精卵的运行 1、射精: 公畜与母畜交配,将精子通过尿生殖道排出体外, 输送到母畜生殖道的过程。 精 液