The cloning procedure is similar to IVF. The only difference is that the DNA of sperm and egg would be replaced by DNA from an adult cell. What law or principle - secular, humanist, or religious - says that one combination of genetic material in a flask is OK, but another is not?
Nathan MyhrvoldA person's basic humanity is not governed by how he or she came into this world, or whether somebody else happens to have the same DNA.
Nathan Myhrvold