Somatic cell nuclear transfer (SCNT) is an artificial cloning technique used to produce cloned mammals. Which of the following statements about SCNT are correct?

1. The recipient egg cell must have its nucleus removed (enucleated) before the donor somatic nucleus is introduced.
2. An electric shock is used to fuse the donor somatic cell with the enucleated egg cell and to stimulate the reconstructed cell to begin dividing.
3. The cloned offspring is genetically identical to the somatic cell donor in both its nuclear and mitochondrial DNA.