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Hello Dolly Dolly the sheep, the world's first cloned adult animal. The scientists who cloned Dolly are to stop experiments involving genetically modifying pigs for human organ transplants because of concerns that deadly new diseases could be passed on to people.

Idaho Gem The world's first cloned mule, was born on May 4. He is an identical genetic copy of his brother, a champion racing mule called Taz, and the first clone to be born in the equine family.

Who's she? The cat's mother? Rainbow, the adult tortoiseshell female from which Cc was cloned. The nuclear-donor cat was used in the transfer technique pioneered by the Edinburgh scientists who made Dolly the sheep. The move opens the prospect of people being able to clone their pets.

Copycat The world's first cloned kitten, named Cc. It was created by scientists in Texas using a cell taken from an adult tortoiseshell female (see next picture). The photo, taken on December 22 2001 when the kitten was seven weeks old, was made public in February 2002.

Five little piggies Five cloned female piglets, named Noel, Angel, Star, Joy and Mary - an important step towards "knock-out pigs". They were born on Christmas Day 2001 in what the Scottish-based firm PPL Therapeutics says is a major step towards successfully producing animal organs and cells for use in human transplants. The pigs lack a gene to which the human immune system reacts aggressively. When an all-male litter is born and bred with the females, a true knock-out pig will be created.

More little piggies Five cloned piglets, born in Virginia, USA on March 5 2000. The world's first cloned piglets were produced by PPL Therapeutics from an adult sow using a slightly different technique from the one that produced Dolly.

Mooving on A pair of new-born cloned calves in a cowshed in Ishikawa Japan, on July 5 1998. They were born exactly two years after Dolly, the British sheep that made history by becoming the first clone of an adult animal. They are the second adult-animal clones, and were produced by a similar technique. A spokesman for the Ishikawa prefectural livestock research centre said the new technique would be used to breed better cattle strains with higher-quality beef or greater milk capacity.

Monkey business ANDi (inserted DNA spelled backwards), the first genetically modified rhesus monkey, at the Oregon regional primate research centre in Oregon, USA. The birth of ANDi, the first rhesus monkey cloned by embryo splitting, is another incremental step toward designing and perfecting new treatments for human genetic disorders.

IN OUR SOCIETY, IDENTICAL TWINS ARE EXAMPLE OF CLONING.