Genetic chimerism in fiction

Human genetic chimerism, which can not only cause a wide range of illnesses but also lead to the same person having more than one profile in genetic fingerprinting, has served as a plot device in many works of fiction. Most known examples are subsequent to the 2004 book Free Culture, where author Lawrence Lessig digresses briefly to describe chimerism and suggest that it could, and had yet to, be well used as a television plot device (particularly for police procedurals involving genetic fingerprinting).

Source: Wikipedia — Genetic chimerism in fiction (CC BY-SA 4.0)