Besides biological perils, a very serious moral problem involves the nucleus transplantation technology concerning humans: an individual right of a human being is offended when a man or woman is made as a copy of another.
Since it is impossible to first ask if the person to be generated wants or not to be a genetic copy of another person, certainly the most important human right is being offended, one's individual freedom, when a human being is obliged to be a genetic copy of another. It is indeed a danger to democracy, whose most basic principle must be nonviolation of individual freedom.
