Environmental Sciences

Environmental Sciences Experts

Roger Sawyer

Department of Biological Sciences
University of South Carolina
United States of America


Dr. Roger Sawyer is currently working as a Professor in the Department of Biology, University of South Carolina, United States of America. His research interests include Biological sciences. He is serving as an editorial member and reviewer of several international reputed journals. Dr. Roger Sawyer is the member of many international affiliations. He has successfully completed his Administrative responsibilities. He has authored of many research articles/books related to Biological sciences.

Research Interest

Studies of the Development and Evolutionary Origins of Reptilian and Avian Epidermal Appendages (scales, claws, beaks and feathers) using Comparative Genomics and Molecular Phylogenies.


  • Greenwold MJ, Bao W, Jarvis ED, Hu H, Li C, Gilbert MT, Zhang G, Sawyer RH. Dynamic evolution of the alpha (α) and beta (β) keratins has accompanied integument diversification and the adaptation of birds into novel lifestyles. BMC evolutionary biology. 2014 Dec 12;14(1):249.

  • Zhang G, Li C, Li Q, Li B, Larkin DM, Lee C, Storz JF, Antunes A, Greenwold MJ, Meredith RW, Ödeen A. Comparative genomics reveals insights into avian genome evolution and adaptation. Science. 2014 Dec 12;346(6215):1311-20.

  • Bao W, Greenwold MJ, Sawyer RH. Expressed miRNAs target feather related mRNAs involved in cell signaling, cell adhesion and structure during chicken epidermal development. Gene. 2016 Oct 15;591(2):393-402.

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