1 h 57 m, 6 nov 2002 año - Fertilization
Descripción:
Sperm enter the vagina during intercourse and go through the cervix to penetrate the egg that developed during ovulation. A zygote is created that moves throgh the fallopian tubes. The zygote dividides to create more cells to become a blastocyst. The blastocyst then attaches to the uterus.Añadido al timeline:
fecha:
1 h 57 m, 6 nov 2002 año
Ahora mismo
~ 23 years ago