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.
The mitochonria in the sperm cell that power its motion are in the Mid-Peice which drops of once the head of the sperm has penetrated the ovum. This means that all the mitochonria and therefore all the mitochondrial DNA comes form the mother ovum. So it is true that the mother contributes more DNA to a baby than the father. It is comonly known that the Nucleic DNA (DNA in the nucleus) in a human baby is half Paternal and half Materna. This is because each Chromosome in our genome has a partner that is very similar to it but with denes coding slightly different. Onc chromosome comes from the father and the other from the mother.