Would cloned humans really be like sheep?

Cloning of humans would not improve the human species and would probably have a negative impact. Cloning involves making a cell or organism that is an exact copy of another. Usually this means that it has the same genes. In higher animals such as Dolly the sheep, this is done by taking an egg, removing its nucleus and replacing it with a nucleus from an adult animal's cell. The egg is placed in an animal's uterus and is ultimately born. The loss of genetic diversity among clones would make them extremely vulnerable. And environment still determines human nature to a large extent.