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.
A sperm cell is the male sex cell. All animals (and many other types of organisms) produce what are called sex cells. Sex cells, are the cells, that when combined, produce a completely new organism. For example, your mother and every other human female, carry egg cells (female sex cells) in their ovaries.emember, we said that DNA is like a recipe book that contains all of the information that makes the organism who and what it is. Half of the biological information contained in the DNA is packaged in each of the male's sperm cells. The egg cell is packaged in a very similar manner.