THE BOYS FROM BRAZIL ( 1978 )

In February 1997, Dolly, a cloned sheep was born in Edinburg, Scotland, which made the world press. Dolly lived until 14 February 2003 when a vet put her to sleep because she was reportedly suffering from a lung disease.

Many think Dolly was the first cloned mammal but this is not correct.

The concept of cloning mammals, even humans, was not new at the time of Dolly's birth.

https://www.britannica.com/topic/Dolly-cloned-sheep

Cloning experiments had been going on since the 1950s ( and many even claim long before that by Hitler ). In 1952 the first tadpole was perfectly cloned, in 1970 the first identical mouse was born, and during the 1980s several cows and sheep. Dolly was only the sheep that became most famous,

https://www.bbc.com/future/article/20120229-cloning-which-animals-and-when

Dolly was cloned from a mammary gland cell of an adult Finn Dorset ewe. Wilmut and his team of researchers at Roslin created her by using electrical impulses to fuse the mammary cell with an unfertilized egg, the nucleus of which had been removed. The fusion process resulted in the transfer of the milk cell nucleus into the egg, which then began to divide. For the mammary nucleus to be accepted and functional in the host egg, the cell first had to be induced to leave the normal cycle of growth and division and enter a resting stage. To this end, the researchers deliberately deprived the cells of nutrients.

Dolly remained alive until 6 years after her birth, with a functional heart, liver, brain and other organs, all genetically derived from the nuclear DNA of a mature mammary gland cell

.The technique used to produce her later became known as somatic cell nuclear transfer (SCNT). SCNT has since been used to generate a wide variety of mammalian clones from different types of adult cells.

The film " The Boys from Brazil" ( 1978 ) is about human cloning. From an ethical perspective, this is still forbidden but you may well think that if so much experimentation has been done for so long on animal cloning, there has also been experimentation on humans in various secret labs. There might be quite a few clones running around on this planet without us knowing it.

Below is the integral film which is absolutely worth watching and also exposes the origins of the whole cloning thing.