Roger H Sawyer

Summary

Affiliation: University of South Carolina
Country: USA

Publications

  1. ncbi request reprint Origin of archosaurian integumentary appendages: the bristles of the wild turkey beard express feather-type beta keratins
    Roger H Sawyer
    Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
    J Exp Zool B Mol Dev Evol 297:27-34. 2003
  2. ncbi request reprint Evolutionary origin of the feather epidermis
    Roger H Sawyer
    Department of Biological Sciences, University of South Carolina, Columbia, SC 29802, USA
    Dev Dyn 232:256-67. 2005
  3. pmc Genomic organization and molecular phylogenies of the beta (beta) keratin multigene family in the chicken (Gallus gallus) and zebra finch (Taeniopygia guttata): implications for feather evolution
    Matthew J Greenwold
    Department of Biological Sciences, University of South Carolina, Columbia, SC 29205, USA
    BMC Evol Biol 10:148. 2010
  4. ncbi request reprint Avian skin development and the evolutionary origin of feathers
    Roger H Sawyer
    Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208, USA
    J Exp Zool B Mol Dev Evol 298:57-72. 2003
  5. ncbi request reprint Developing antibodies to synthetic peptides based on comparative DNA sequencing of multigene families
    Roger H Sawyer
    Department of Biological Sciences, Coker Life Sciences, University of South Carolina, Columbia, South Carolina 29208, USA
    Methods Enzymol 395:636-52. 2005
  6. ncbi request reprint Low mitochondrial DNA variation among American alligators and a novel non-coding region in crocodilians
    Travis C Glenn
    Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208, USA
    J Exp Zool 294:312-24. 2002
  7. doi request reprint Linking the molecular evolution of avian beta (β) keratins to the evolution of feathers
    Matthew J Greenwold
    Department of Biological Sciences, University of South Carolina, Columbia, USA
    J Exp Zool B Mol Dev Evol 316:609-16. 2011
  8. ncbi request reprint Origin of feathers: Feather beta (beta) keratins are expressed in discrete epidermal cell populations of embryonic scutate scales
    Roger H Sawyer
    Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208, USA
    J Exp Zool B Mol Dev Evol 295:12-24. 2003
  9. ncbi request reprint Evolutionary relationships among copies of feather beta ({beta}) keratin genes from several avian orders
    Travis C Glenn
    Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA Department of Environmental Health Science, University of Georgia, Athens, GA 30602, USA Marine Science Program, University of South Carolina, Columbia, SC 29208, USA
    Integr Comp Biol 48:463-75. 2008
  10. doi request reprint Molecular evolution and expression of archosaurian β-keratins: Diversification and expansion of archosaurian β-keratins and the origin of feather β-keratins
    Matthew J Greenwold
    Department of Biological Sciences, University of South Carolina, Columbia, South Carolina
    J Exp Zool B Mol Dev Evol 320:393-405. 2013

Collaborators

Detail Information

Publications12

  1. ncbi request reprint Origin of archosaurian integumentary appendages: the bristles of the wild turkey beard express feather-type beta keratins
    Roger H Sawyer
    Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
    J Exp Zool B Mol Dev Evol 297:27-34. 2003
    ..The significance of these observations to explanations for the evolution of archosaurian integumentary appendages is discussed...
  2. ncbi request reprint Evolutionary origin of the feather epidermis
    Roger H Sawyer
    Department of Biological Sciences, University of South Carolina, Columbia, SC 29802, USA
    Dev Dyn 232:256-67. 2005
    ....
  3. pmc Genomic organization and molecular phylogenies of the beta (beta) keratin multigene family in the chicken (Gallus gallus) and zebra finch (Taeniopygia guttata): implications for feather evolution
    Matthew J Greenwold
    Department of Biological Sciences, University of South Carolina, Columbia, SC 29205, USA
    BMC Evol Biol 10:148. 2010
    ....
  4. ncbi request reprint Avian skin development and the evolutionary origin of feathers
    Roger H Sawyer
    Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208, USA
    J Exp Zool B Mol Dev Evol 298:57-72. 2003
    ....
  5. ncbi request reprint Developing antibodies to synthetic peptides based on comparative DNA sequencing of multigene families
    Roger H Sawyer
    Department of Biological Sciences, Coker Life Sciences, University of South Carolina, Columbia, South Carolina 29208, USA
    Methods Enzymol 395:636-52. 2005
    ..This represents a powerful new approach combining techniques from molecular evolution and developmental biology to study the expression and evolution of specific members of multigene families...
  6. ncbi request reprint Low mitochondrial DNA variation among American alligators and a novel non-coding region in crocodilians
    Travis C Glenn
    Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208, USA
    J Exp Zool 294:312-24. 2002
    ..These results suggest that American alligators underwent a severe population bottleneck in the late Pleistocene, resulting in nearly homogenous mtDNA among all American alligators today...
  7. doi request reprint Linking the molecular evolution of avian beta (β) keratins to the evolution of feathers
    Matthew J Greenwold
    Department of Biological Sciences, University of South Carolina, Columbia, USA
    J Exp Zool B Mol Dev Evol 316:609-16. 2011
    ..Recent biophysical studies of the β-keratins in feathers support the view that the appearance of the subfamily of feather β-keratins altered the biophysical nature of the feather establishing its role in powered flight...
  8. ncbi request reprint Origin of feathers: Feather beta (beta) keratins are expressed in discrete epidermal cell populations of embryonic scutate scales
    Roger H Sawyer
    Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208, USA
    J Exp Zool B Mol Dev Evol 295:12-24. 2003
    ....
  9. ncbi request reprint Evolutionary relationships among copies of feather beta ({beta}) keratin genes from several avian orders
    Travis C Glenn
    Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA Department of Environmental Health Science, University of Georgia, Athens, GA 30602, USA Marine Science Program, University of South Carolina, Columbia, SC 29208, USA
    Integr Comp Biol 48:463-75. 2008
    ....
  10. doi request reprint Molecular evolution and expression of archosaurian β-keratins: Diversification and expansion of archosaurian β-keratins and the origin of feather β-keratins
    Matthew J Greenwold
    Department of Biological Sciences, University of South Carolina, Columbia, South Carolina
    J Exp Zool B Mol Dev Evol 320:393-405. 2013
    ..The expansion of the avian specific feather β-keratin genes accompanied the diversification of birds and the evolution of feathers. J. Exp. Zool. (Mol. Dev. Evol.) 320B: 393-405, 2013. © 2013 Wiley Periodicals, Inc. ..
  11. ncbi request reprint Microsatellite DNA analyses support an east-west phylogeographic split of American alligator populations
    Lisa M Davis
    Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208, USA
    J Exp Zool 294:352-72. 2002
    ....
  12. ncbi request reprint Immunocytochemical analysis of beta keratins in the epidermis of chelonians, lepidosaurians, and archosaurians
    Lorenzo Alibardi
    Dipartimento di Biologia Evoluzionistica Sperimentale, University of Bologna, 40126, Bologna, Italy
    J Exp Zool 293:27-38. 2002
    ..These immunocytochemical results suggest that the 3-nm beta keratin filaments of the reptilian integument are phylogenetically related to those found in avian epidermal appendages...