1.   Because cloning involves experimenting with human embryos, it raises fundamental questions of when human life begins, questions that lawmakers have wrestled with for nearly a year.

2.   Cloning involves putting the genetic material of a donor into an egg where the nucleus has been removed to create a genetic copy of the donor.

3.   Cloning involves stripping the DNA-carrying nucleus from an egg and replacing it with the nucleus from a donor cell.

4.   Cloning involves taking DNA from a cell of an adult animal and putting it into an unfertilized egg.

5.   Cloning involves the nucleus of an egg being mechanically replaced by the nucleus from a different cell.

6.   Even though cloning did not involve fertilization, the organism formed was identical in every way to an embryo, he said.

7.   Cloning involves the use of genetic material to artificially create a genetically identical copy of a living creature.