ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Human cloning. Conceptual computer artwork of a human construction kit, representing human cloning. A human clone is a person whose genetic material, or DNA (deoxyribonucleic acid), is identical to that of another person. Human cloning is theoretically capable of producing a limitless number of genetically-identical people, by replacing DNA present in a human egg with adult DNA. Many regard human cloning as unethical.
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