News Following is a transcript of the video. Narrator: We've been able to clone human embryos for about seven years. But as far as we know, no one's actually cloned a whole person. Turns out, Can a human individual be cloned? The correct answer is, strictly speaking, no. What is cloned are the genes, not the individual; the genotype, not the phenotype. The technical obstacles are immense even for cloning a human's genotype. Ian Wilmut, the British scientist who directed the cloning project, succeeded with Dolly only after 270 trials. Fact Sheets about Genomics Cloning Fact Sheet En Español Cloning Fact Sheet The term cloning describes a number of different processes that can be used to produce genetically identical copies of a biological entity. The copied material, which has the same genetic makeup as the original, is referred to as a clone. Our experiences have told us that, with a little work, we humans can clone just about anything we want, from frogs to sheep—and probably even ourselves. So we can clone things. But why would we want to? Below are some of the ways in which cloning might be useful. Dom Burgess investigates whether we could clone humans in the future and the current state of artificial and reproductive cloning processes. To make a clone, scientists transfer the DNA from an animal's somatic cell into an egg cell that has had its nucleus and DNA removed. The egg develops into an embryo that contains the same genes as the cell donor. Then the embryo is implanted into an adult female's uterus to grow. Human reproductive cloning is unethical, but the production of cells from cloned embryos could offer many potential benefits. So, can human cloning be made safe? Nature Reviews Genetics - Human IOD1.

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