Debbie, Denise, Dianna and Daisy were born in 2007 (more than a decade after Dolly) from the same cell line.
Dolly fell in 2003. She suffered from degeneration of bones and joints, and came in her lung disease. Geneticists worried that premature signs of aging can be caused by cloning.
“Sheep from Nottingham ‘( care of them, Kevin Sinclair of the University of Nottingham) are evidence that cloned organisms are aging normally. the researchers studied 13 cloned animals of all ages. proved to be completely healthy.
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