Investigation of Reproduction and Development in Animals Cycles, Conception and Contraception Fertility is the condition of being fertile. The aim of contraception is to inhibit fertility in individuals, hence, slowing population growth. The system by which all female contraception must operate: the menstrual cycle. What is the menstrual cycle? and what hormones are involved in controlling it? After puberty, the female produces an egg each month. Other changes take place on a cyclic basis including …showed first 75 words of 728 total…

…showed last 75 words of 728 total…eggs. · Retrieval of the eggs from the ovary. · Fertilization of the eggs and culture of the embryos in the IVF laboratory. · Placement of the embryos into the uterus for implantation (embryo transfer or ET). Bibliography: Encarta Encyclopedia, Microsoft 96' Kinnear, Judith, Book One: Nature of Biology, The Jacaranda Press, Sydney, 1992. Netscape Winston, Robert, Infertility, A Sympathetic Approach, Optima Book, Great Britian, 1994. World Book Encyclopedia, World Book Inc, Chicago, 1991. The Human Body, World Book Inc, Chicago, 1990.