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.
Summary: 1  The most obvious difference: a sperm cell is a reproductive cell of males while egg cells are of females. 2  Both egg cells and sperm cells depend on each other for the reproduction of a human life. 3  Both egg cells and sperm cells undergo meiosis.n the process of sperm cell formation, a motile spermatozoa is produced. While in egg cell formation, an ovum in spherical in shape and immobile. It is produced and is bigger in size than the sperm cell. There is also a difference on how these cells are produced and it involves hormones.