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.
Dolly is a case of reproductive cloning, the aim of which is to create offspring. Reproductive cloning is to be distinguished from cloning for therapy and research, sometimes also referred to as âtherapeutic cloningâ. Both reproductive cloning and cloning for research and therapy involve SCNT, but their aims, as well as most of the ethical concerns they raise, differ.