Post #5361

Mammal cloning cannot be endless: Mouse line fails at generation 58 There is a limit on how many times a mammal can be cloned before suffering "mutational meltdown," Japanese scientists have discovered, after making 1,200 clones over two decades that started off with a single mouse. The 58th generation of mice did not survive, establishing for the first time that mammals cannot be cloned an infinite number of times, the scientists said in a study published on Tuesday. It had been hoped that this method, which involves making clones of other clones, could have a range of uses in the future, including saving endangered species or mass-producing animals for their meat. "We had believed that we could create an infinite number of clones. That is why these results are so disappointing," the study's senior author Teruhiko Wakayama of the University of Yamanashi told AFP. Source:Phys.org @EverythingScience