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Review and discuss the significance of animal cloning (such as: Dolly the sheep) Animal Cloning is the production of one or more identical copies of a genome of a particular animal. Embryo splitting (or blastomere separation) and nuclear transfer are two methods by which animals may be cloned. Both of these methods require gestation in the uterus to attain complete development. Embryo splitting is the process whereby an embryo has its cells (blastomeres) separated soon after fertilization at the 2nd, 4th or 8th cell stage. At this stage, each cell is considered to be at a stage where the genetic material has not been programmed to develop into a select tissue, it is undifferentiated and can therefore develop into a variety of tissues, or a complete organism given the correct conditions. This is referred to as totipotency and it allows scientists to split animal embryos into several cells to produce multiple...

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