FOOTNOTE. “Germ cells are often described as the ultimate totipotent stem cell. However, germ cells give rise to only sperm or eggs, and it is not until the fertilization of the egg or parthenogenesis that an entirely new organism arises. Therefore, germ cells are unipotent cells that retain a totipotent potential that is eventually transferred to the zygote at fertilization.”
http://www.sciencedirect.com/science/article/pii/S009286740800202X