Dosage compensation is less effective in birds than in mammals

Yuichiro Itoh^{* 1} , Esther Melamed^{* 1} , Xia Yang² , Kathy Kampf¹ , Susanna Wang² , Nadir Yehya² , Atila Van Nas² , Kirstin Replogle³ , Mark R Band⁴ , David F Clayton³ , Eric E Schadt⁵ , Aldons J Lusis² and Arthur P Arnold¹

¹Department of Physiological Science, University of California, Los Angeles, CA 90095, USA

²Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA

³Department of Cell and Developmental Biology, University of Illinois, Urbana, IL 61801, USA

⁴W.M. Keck Center for Comparative and Functional Genomics, University of Illinois, Urbana, IL 61801, USA

⁵Rosetta Inpharmatics, Seattle, WA 98034, USA