Cloning does not produce 100% identical human beings. The theory behind this is that the biological blueprint of the genes is the same in cloned humans as it is in normal ones, but they are read and expressed incorrectly. Researchers have found several abnormalities in cloned organisms. The cloned organism may be born normal and resemble its non-cloned counterpart, but majority of the time will express changes in its genome later on in life (Jaenisch, 2001). The concern with cloning humans is that the changes in genomes may not only result in changes in appearance, but in psychological and personality changes as well. This is an example of an inductive argument, because if it happens with one test subject, it would happen with all clones.
I would inductively argue that unknown and undetermined pathologies are likely to emerge with cloning. Cloning Dolly the sheep had a low success rate per fertilized egg. She was born after 277 eggs were used to create 29 embryos, which only produced three lambs at birth, only one of which lived. Seventy calves have been created and one third of them died young. There were early claims that Dolly the Sheep had pathologies resembling accelerated aging. Scientists speculated that Dolly's death in 2003 was related to the shortening of telomeres, DNA-protein complexes that protect the end of linear chromosomes. The opposing side of the coin would counter that Dolly's early death due to respiratory infection was unrelated to deficiencies