title: Reinforcing reinforcement.
authors.affiliation: Freelance Science Writer, La Jolla, California, United States of America. mair@salk.edu
authors.forename: William
authors.initials: W
authors.lastname: Mair
mesh_terms: D000818:Animals; D005075:Biological Evolution; D004330:Drosophila / Q000235:genetics*; D005260:Female; D049810:Genetic Speciation; D014644:Genetic Variation; D005828:Genetics, Population; D008297:Male