About the Authors

Melek A. Kayserili

Contributed equally to this work with: Melek A. Kayserili, Dave T. Gerrard

Affiliation Max Planck Institute for Molecular Cell Biology and Genetics, Dresden, Germany

Dave T. Gerrard

Contributed equally to this work with: Melek A. Kayserili, Dave T. Gerrard

Affiliation Faculty of Life Sciences, The University of Manchester, Manchester, United Kingdom

Pavel Tomancak

tomancak@mpi-cbg.de (PT); kalinka@mpi-cbg.de (ATK)

Affiliation Max Planck Institute for Molecular Cell Biology and Genetics, Dresden, Germany

Alex T. Kalinka

tomancak@mpi-cbg.de (PT); kalinka@mpi-cbg.de (ATK)

Affiliation Max Planck Institute for Molecular Cell Biology and Genetics, Dresden, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MAK PT ATK. Performed the experiments: MAK. Analyzed the data: ATK. Contributed reagents/materials/analysis tools: PT. Wrote the paper: ATK. Discovered higher gene expression divergence on the X chromosome in Drosophila embryos and conceived the branch length analysis: DTG.