There are two main techniques used to clone mammals and if scientist are allowed these techniques may be applied in the near future to clone human beings. The first is embryo splitting. An embryo is the early stage of a fetus. Embryo splitting is the artificial division of a single embryo. The same process happens naturally to produce identical twins.
Identical twins are actually clones of one another because they have the same genetic code.
Embryo splitting is not very popular because embryos can only be split a few times therefore can only produce a few clones. The second technique, somatic nuclear replacement, has the potential to create endless numbers of the same person. For this reason this technique is the target of human cloning attacks by political figures, religious leaders, and even some scientist. Dolly the sheep was cloned by this nuclear replacement procedure. It involves transferring DNA from a person s cell to a genetically blank egg.