The correct sequence of events occur in human reproduction is: Gametogenesis → insemination → fertilisation → implantation → gestation → parturition • Insemination is the process by which semen is released from the penis into the vagina during copulation (coitus). • Fertilisation is a process in which ovum fuses with the sperm to form the zygote that eventually forms the blastocyst. • About 6 days after fertilization, the blastocyst loosely attaches to the endometrium in a process called implantation • The process of development of embryo is called gestation • Labour or parturition is the process by which the foetus is expelled from the uterus through the vagina, also referred to as giving birth.