The genetic material or DNA is present inside the nucleus in the form of chromosomes. Only when this DNA replicates, does the cell divide to form new cells. The functional units of this DNA, also known as genes, are responsible for the synthesis of proteins. Thus, the nucleus is very important for cellular reproduction and all the other developmental processes of a cell, without which the cell cannot have a stable future. Due to this it said that, “a cell without a nucleus is without any future.”