title: The early history.
authors.affiliation: Department of Genetics, The University, Sheffield, UK.
authors.forename: A
authors.initials: A
authors.lastname: Roper
mesh_terms: D001233:Aspergillus nidulans / Q000235:genetics* / Q000502:physiology; D002874:Chromosome Mapping; D005823:Genetics / Q000266:history; D049673:History, 20th Century; D016296:Mutagenesis / Q000235:genetics / Q000502:physiology; D012106:Research / Q000266:history