title: The (dual) origin of epigenetics.
authors.affiliation: Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: D
authors.initials: D
authors.lastname: Haig
mesh_terms: D000818:Animals; D044127:Epigenesis, Genetic; D005823:Genetics / Q000266:history; D049673:History, 20th Century; D009626:Terminology as Topic