Scientists in China have successfully cloned two monkeys, the latest step in the country’s ambition to become a global scientific leader.
The genetically identical long-tailed macaques born in Shanghai last month, called Zhong Zhong and Hua Hua, are the first primate clones produced through the method that made Dolly the sheep in Scotland in 1996. Their names are a play on the phrase Zhonghua, which means Chinese nation or people.
Although the cloning method, known as somatic cell nuclear transfer (SCNT), is almost routine in mammals such as sheep, cattle and mice, it has been extremely difficult to replicate in primates. Previous efforts with monkeys often resulted in clones that did not develop properly as embryos or died shortly after birth.
