<Tr> <Th> Nation from </Th> <Td> China </Td> </Tr> <Tr> <Th> Known for </Th> <Td> First primates to be cloned using the somatic cell nuclear transfer method </Td> </Tr> <P> Zhong Zhong (Chinese: 中 中; pinyin: Zhōng Zhōng, born 27 November 2017) and Hua Hua (Chinese: 华 华; pinyin: Huá Huá, born 5 December 2017) are a pair of identical crab - eating macaques (also referred to as cynomolgus monkeys) that were created through somatic cell nuclear transfer (SCNT), the same cloning technique that produced Dolly the sheep in 1996 . They are the first cloned primates produced by this technique . Unlike previous attempts to clone monkeys, the donated nuclei came from fetal cells, not embryonic cells . The primates were both born at the Institute of Neuroscience of the Chinese Academy of Sciences in Shanghai . </P> <P> Since scientists produced the first cloned mammal Dolly the sheep in 1996 using the somatic cell nuclear transfer (SCNT) technique, 23 mammalian species have been successfully cloned, including cattle, cats, dogs, horses and rats . Using this technique for primates had never been successful and no pregnancy had lasted more than 80 days . The main difficulty was likely the proper programming of the transferred nuclei to support the growth of the embryo . Tetra (born October 1999), a female rhesus macaque, was created by a team led by Gerald Schatten of the Oregon National Primate Research Center using a different technique, called "embryo splitting". She is the first "cloned" primate by artificial twinning, which is a much less complex procedure than the DNA transfer used for the creation of Zhong Zhong and Hua Hua . </P>

Where were zhong zhong and hua hua born