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.
This type of cloning can be used for plants and animals, as well as human cloning. In reproductive cloning, a technique also known as Somatic Cell Nuclear Transfer (SCNT), the genetic material is removed from a donor egg so as to create an empty egg.