P P T 2 REPRODUCTION IN HUMANS OBJECTIVE ? Describe the process of sexual reproduction ? Site of fertilization ? Role of cell division ? Significance of implantation and gestation 1 ?Ovulation 2 ? Fertilization 3 ? Implantation 1. OVULATION(DAY 0) ? Ovulation releases an egg, which enters the fallopian tube. ? Usually occurs on the 14th day from the beginning of menstruation. ? One egg is released every month by one of the ovaries. 2. FERTILIZATION ? Fertilisation occurs. A sperm enters the egg and the nuclei of the egg and the sperm fuses, forming a zygote. ? About 100 million sperms are released into the vagina. ? Only one sperm will fertilize the egg. ? Upon fertilization, the membrane of the egg