Cloning Animals
Dolly the sheep was the first living
mammal
cloned using an adult
body cell. Scientists were changing
animals in order to make medicine.
Cloning the animals would make
things easier.
Dolly was born in 1996. She had children
and lived like a normal sheep. But Dolly
died young, because her genes were from
the cells of an adult sheep. Scientists are still trying to
find out how to keep cloned animals alive longer.
mammal
: a warm-blooded animal with hair or fur that gives birth to live young and
feeds its young milk
In theory, SCNT could be used
to bring extinct species, such as
woolly mammoths, back to life.
SCNT has been used
for decades to clone
animal cells. It even
makes whole animals,
such as farm animals.
Scientists in Oregon
were the first to use
SCNT on human cells. In
2013, they used SCNT.
They turned a skin cell
into a stem cell.
CLONING
HUMANSâ
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