. After looking around, I learned — Nuclear transfer technology involves transferring the complete genetic material from the nucleus of a cultured donor cell to a mature recipient egg whose own nucleus has been removed. The resulting offspring are genetically identical to the founder animal who supplied the donor nucleus (see diagram). For diagram refer to link The technique also offers the potential to derive transgenic animals from cultured cells. These cells can be genetically manipulated to obtain the desired characteristics for protein production and, through nuclear transfer technology, each will develop into a genetically identical transgenic sheep or cow. The precision of these modifications can be enhanced with unique 'gene targeting system' which is capable of introducing DNA at a specific site in the host chromosome. Pros: Research can lead to eradicating certain medical conditions. Cons T he usual ethical issues , miss use etc.