And the technique used by the Chinese scientists is still a long way from producing human babies, even if that were ethically permissible.
The two genetically identical macaques were born two weeks apart, in late November and December.
Until now, attempts to carry out the same process in primates have proved hard because of the far more complicated process of cell division and early development. "In principle, that can be applied to humans".
"There would undoubtedly be a market for human clones". "Society, for ethical reasons, will not permit cloning of humans and this is never within our consideration, to extend that technique to humans".
"The barrier of cloning primate species is now overcome". Some species just are like that; for example, mice and cats are easy to clone, but rats and dogs are hard. The technique-which has previously been employed to clone sheep, cattle, cats, mice, and dogs-can create more clones than embryo splitting and allows researchers greater control over the edits they make to the transferred DNA.
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This reconstructed egg then develops into a clone of whatever donated the replacement nucleus.
Since many years scientists have been doing many experiments on cloning process and also have achieved major success.
Zhong Zhong and Hua Hua are not the first primate clones.
Four pregnancies resulted, but there were two miscarriages within two months of gestation. "It remains a very inefficient and hazardous procedure", said Robin Lovell-Badge, a cloning expert at the Francis Crick Institute in London not involved in the research study.
Chinese scientists have announced a new world first.
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Poo continued on, stating that the successful creation of a monkey clone has the potential for applications in research such as Alzheimer's, Parkinson's, and Huntington's disease due to our new ability to create genetically identical primates with bodies that are somewhat analogous to our own.
"We are very aware that future research using non-human primates anywhere in the world depends on scientists following very strict ethical standards", adds Poo.
Scientist Qiang Sun, director of the Nonhuman Primate Research Facility, said: "There are a lot of questions about primate biology that can be studied by having this additional model". For now, Zhong Zhong and Hua Hua, who are bottle-fed, are being monitored for their physical and intellectual development, and are showing normal growth for monkeys their age.
"There will be rapid development in this field", Sun said. "Because cloning has a failure rate of at least 90 percent, these two monkeys represent misery and death on an enormous scale".
The researchers downplayed the potential of their process for human cloning, however, saying they had "no intention" to apply it to humans. But among them only six got pregnant. "I think there will be barriers to this becoming a regular lab procedure". For now, it has not been clearly stated that if, this method can be used for cloning the humans or not.
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