Parasite Eve

is a Japanese science fiction horror novel by Hideaki Sena, first published by Kadokawa in 1995. The book was published in North America by Vertical, Inc. in 2005. Parasite Eve was adapted into a film and manga series. It was later expanded into three video games which is centered on a different character named Aya Brea; two that serve as sequels to the novel, along with a spin-off third game. The video games have also been adapted into a manga series. Plot Mitochondria are the "power house" of biological cells. It is thought that they were originally separate organisms, and a symbiotic relationship between them and early cellular life has evolved into their present position as cell organelles with no independent existence (see endosymbiotic theory). The novel's plot supposes that mitochondria, which are inherited through the female line of descent, form the dispersed body of an intelligent conscious life-form, dubbed Eve, which has been waiting throughout history and evolution for the right conditions when mitochondrial life can achieve its true potential and take over from eukaryotic life-forms (i.e. humans and similar life) by causing a child to be born that can control its own genetic code.