Friday, January 15, 2021

What Happened to Dolly the Cloned Sheep and What Does It Mean for Animal Cloning Today?

 What Happened to Dolly the Cloned Sheep 

Dolly the Cloned Sheep

By Hugo Britt - - Dolly the Sheep was the first mammal cloned from an adult cell. She was born in 1996 in an experiment by the Roslin Institute, which is part of the University of Edinburgh, Scotland.

Known as somatic-cell nuclear transfer (SCNT), the cloning technique involved:

  • Taking a cell from the mammary gland of an adult ewe (sheep one) and removing the genetic material from it.
  • Inserting the genes into an empty egg cell taken from sheep two.
  • The embryo was then carried by a third sheep (a surrogate mother).
  • The cloned lamb was genetically identical to sheep one.

The production of a healthy clone proved that a cell taken from a specific part of the body could recreate a whole individual.

The announcement of Dolly’s existence created a media storm around the ethical questions involved and the possibility of cloning humans.

Her early death, combined with severe arthritis and the fact that Dolly had shortened telomeres, caused a second wave of media interest, with many asking if Dolly was “born old” or born the same age as the adult sheep from which she was cloned.  Read the whole article HERE.

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