Because of the fission process that consumes the fuels, the old fuel rods must be changed periodically to fresh ones (this period is called a cycle). However, only a part of the assemblies (typically one-third) are removed since the fuel depletion is not spatially uniform.
In fertilization, the sperm and egg both contain one set of chromosomes. the father (sperm) and one from the mother (egg). In SCNT, the egg cell's single set of chromosomes is removed. chromosomes. come from the somatic cell.
In principle, those people who might wish to produce children through human reproductive cloning [9] include: 1  Infertile couples who wish to have a child that is genetically identical with one of them, or with another nucleus donor. 2  Other individuals who wish to have a child that is genetically identical with them, or with another nucleus donor.