Human cloning. Conceptual computer artwork of a foetus overlaid with the coded sequence of the nucleotide bases that make up the deoxyribonucleic acid molecule (DNA). This could represent human cloning or a designer baby. The codes for the four bases are adenine (A), guanine (G), cytosine (C) and thymine (T). Clones are genetically-identical copies, created using genetic material from a template person. A designer baby has its genetic composition decided upon by its parents, which may endow it with traits such as high intelligence, or remove the predisposition to a genetically inherited disease.