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Zhong Zhong and Hua Hua (female crab-eating macaques, 2017) – first successful cloning of primates using somatic cell nuclear transfer, the same method as Dolly, with the birth of two live female clones. Conducted in China in 2017. [65] [66] [67] [68]
The employment of adult somatic cells in lieu of embryonic stem cells for cloning emerged from the foundational work of John Gurdon, who cloned African clawed frogs in 1958 with this approach. The successful cloning of Dolly led to widespread advancements within stem cell research, including the discovery of induced pluripotent stem cells. [4]
If you were old enough to watch the news or read the paper back in the late 1990s, you very likely remember Dolly, the cloned sheep. Born in 1996, the researchers responsible for cloning her kept ...
[110] [111] The best current cloning techniques have an average success rate of 9.4 percent [112] (and as high as 25 percent [37]) when working with familiar species such as mice, [note 1] while cloning wild animals is usually less than 1 percent successful.
Cloning animals requires procedures that can cause pain and distress, and there can be high failure and mortality rates.” Being able to produce genetically identical monkeys could be useful ...
This technique is currently the basis for cloning animals (such as the famous Dolly the sheep), [30] and has been proposed as a possible way to clone humans. Using SCNT in reproductive cloning has proven difficult with limited success. High fetal and neonatal death make the process very inefficient.
Scientists are pioneering and refining three techniques in their attempts to revive lost and rare species: cloning, genetic engineering, and traditional back breeding, a form of selective breeding ...
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.