US EditionWhat Happens when You Clone a Mouse for 58 Generations?
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What happens when you clone a mouse for 58 generations?
In 2005, a husband-and-wife team at Japan's RIKEN institute ran an experiment with a mouse: clone it, then clone the clone, then clone that clone, and keep going. Dr. Teruhiko Wakayama and Dr. Sayaka Wakayama kept it up for 20 years — through lab moves, a 2011 earthquake, and the pandemic — requiring 30,947 individual cloning attempts to produce 58 successive generations, as summarized by Metacelsus. — Read the rest The post What happens when yo…
Cloning in mammals: the striking scientific discovery that confirms why it is dangerous
An experiment with a mouse showed that genetic mutations affect future generations until reproduction stops, raising the question of why cloning should never reach humans.The cloning experiment with a female mouse began in 2005.For decades, cloning has been synonymous with promise, mystery and fascination. From the famous sheep Dolly (the first cloned mammal in 1996, nearly 30 years ago) to the most advanced experiments in modern biotechnology, …
Japanese researchers have just shown, cloned a single mouse 58 times in a row, that a mammal cannot be duplicated indefinitely without its genome collapsing.
Reproducing an animal in the same way has long made it look like an endless copy, as if the living person could be duplicated without consequence. But this prowess raises a question about the soundness of the genome. Mouse cloning allows us to observe how far a line can be repeated before mutations weaken it. A Japanese team pushed the experiment for twenty years to measure the limit. A unique experience in the world pushed the cloning of mice t…
In a two-decade-long study published this week in the journal Nature Communications, scientists at the University of Yamanashi in Japan succeeded in cloning a single mouse for 58 consecutive generations – a feat never before recorded in mammals. But eventually, the genetic line reached its limit: the cloned offspring of the 58th generation did not survive beyond the day they were born. The experiment, which began in 2005 and was led by researche…
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