The Biology of Human Fertilisation
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Fertilisation is the union of the two gametes (the egg and the sperm) and takes place in the Fallopian tube or oviduct. While in the Fallopian tube, the fertilised egg divides to form a ball of cells, known as the preimplant-ation embryo, which then passes into the uterus or womb. Implantation begins on about the sixth day following fertilisation, and if all goes well, a baby will be born about 9 months later.
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