The natural reproduction happens by a fertilized sperm of the male that goes into the egg cell that hold chromosomes. In preparation, the sperm and egg both hold one set of chromosomes. The point when the sperm and egg join, the coming about zygote winds up with two sets -one from the father (sperm) and one from the mother (egg).
Somatic Cell nuclear Transfer that is a very common technique to clone animal cells. The egg cell's single set of chromosomes is uprooted. It is reinstated by the nucleus from a somatic cell, which as of recently holds ...