About the Authors

Arnar Palsson

apalsson@hi.is

Affiliations Faculty of Life and Environmental Sciences, University of Iceland, Reykjavik, Iceland, Institute of Biology, University of Iceland, Reykjavik, Iceland, Biomedical Center, University of Iceland, Reykjavik, Iceland, Department of Ecology and Evolution, University of Chicago, Chicago, Illinois, United States of America

Natalia Wesolowska

Affiliations Department of Ecology and Evolution, University of Chicago, Chicago, Illinois, United States of America, Cell Biology and Biophysics Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany

Sigrún Reynisdóttir

Affiliations Faculty of Life and Environmental Sciences, University of Iceland, Reykjavik, Iceland, Institute of Biology, University of Iceland, Reykjavik, Iceland

Michael Z. Ludwig

Affiliation Department of Ecology and Evolution, University of Chicago, Chicago, Illinois, United States of America

Martin Kreitman

Affiliation Department of Ecology and Evolution, University of Chicago, Chicago, Illinois, United States of America

Competing Interests

Arnar Palsson is an PLOS ONE editor. This does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: AP MK MZL. Performed the experiments: AP NW SR MZL. Analyzed the data: AP. Contributed reagents/materials/analysis tools: AP MZL. Wrote the paper: AP NW MK. Fly work: AP. Molecular work: AP NW SR. Embryo work: AP MZL.