An unfertilized donor egg cell is taken from another animal and has its nucleus replaced with one from a cell from the animal to be cloned. The reprogrammed egg

An unfertilized donor egg cell is taken from another animal and has its nucleus replaced with one from a cell from the animal to be cloned. The reprogrammed egg cell is then stimulated to start dividing much like a normal fertilized egg. https://en.wikipedia.org/wiki/Somatic_cell_nuclear_transfer https://en.wikipedia.org/wiki/Somatic_cell_nuclear_transfer