Ключевые слова: clone, copy, doppelgangers, double, dual, dual nature, dualistic, duality, duo, genetic code, genetic connection, genetic diversity, genetic inheritance, genetic makeup, genetic pairing, genetic resemblance, genetic traits, genetics, identical, lookalike, match, mirror, mirror image, pair, parallel, replicate, reproduction, resemblance, siblings, similarity, symmetrical, symmetrical faces, symmetry, twin bond, twin formation, twin relationships, twin souls, twin study, twin synchronicity, twinning, twinning genetics, twinning mechanism, twinning occurrence, twinning origins, twinning patterns, twinning phenomenon, twinning process, twinning variations, twins,