title: Balancing Selection: Walking a Tightrope.
abstract: Combining modern transgenic techniques with fitness measurements and enzyme activity assays, a new study demonstrates a habitat-dependent tradeoff between two alleles of a key detoxification enzyme in fruit flies. The elegant findings provide concrete, elusive evidence supporting a foundational and controversial theory about the maintenance of genetic variation.
authors.affiliation: Department of Ecology and Evolutionary Biology, University of Arizona, BioSciences West, 1041 East Lowell Street, Tucson, AZ 85721, USA.
authors.forename: Andrew D
authors.initials: AD
authors.lastname: Gloss
authors.affiliation: Department of Ecology and Evolutionary Biology, University of Arizona, BioSciences West, 1041 East Lowell Street, Tucson, AZ 85721, USA. Electronic address: whiteman@email.arizona.edu.
authors.forename: Noah K
authors.initials: NK
authors.lastname: Whiteman
mesh_terms: D000483:Alleles; D000818:Animals; D014644:Genetic Variation; D008957:Models, Genetic; D012641:Selection, Genetic; D016138:Walking