Martin J Cohn

Professor, Joint Faculty

Ph.D. University College London, UK, 1997

406 Cancer & Genetics Research Complex
(352) 273-8099

Research Interests

Evolutionary Developmental Biology: Molecular development of vertebrate external genitalia; Evolution of vertebrate limb development; Developmental genetic mechanisms of vertebrate skeleton evolution.

Representative Publications

  • O’Shaughnessy, K., Dahn. R. D., and Cohn, M. J. (2015). Molecular development of chondrichthyan claspers and the evolution of copulatory organs.  Nature Communications, NIHMS 666252, Publ.ID: NCOMMS-14-19837.
  • Herrera, A. M. and Cohn, M. J. (2014). Embryonic origin and compartmental organization of the external genitalia. Scientific Reports 4:6896. DOI: 10.1038/srep06896. (pdf)
  • Gredler, M. L., Larkins, C. E., Leal, F., Lewis, A. K., Herrera, A. M., Perriton, C. L., Sanger, T. J., and Cohn, M. J. (2014). Evolution of External Genitalia: Insights from Reptilian Development. Sexual Development, DOI: 10.1159/000365771.
  • Leal, F., and Cohn, M. J. (2014). Development of the hemipenes in the ball python snake Python regius. Sexual Development, DOI: 10.1159/0000363758.
  • Larkins, C. E., and Cohn, M. J. (2014). Phallus development in the turtle Trachemys scripta. Sexual Development, DOI: 10.1159/000363631.
  • Herrera, A. M., Brennan, P. L. R., and Cohn, M. J. (2014). Development of avian external genitalia: interspecific differences and sexual differentiation of the male and female phallus. Sexual Development, DOI: 10.1159/000364927.
  • Gredler, M. L., Sanger, T. J., and Cohn, M. J. (2014). Development of the cloaca, hemipenes, and hemiclitores in the green anole, Anolis carolinesis. Sexual Development, DOI: 10.1159/000363757.
  • Gredler, M. L., Seifert, A. W., and Cohn, M. J. (2014). Morphogenesis and patterning of the phallus and cloaca in the American alligator, Alligator mississippiensis. Sexual Development, DOI: 10.1159/000364817.
  • Herrera, A., Shuster, S., Perriton, C., and Cohn, M. J. (2013). Developmental basis of phallus reduction during bird evolution. Current Biology, 23: 1-10.
  • Zheng, Zhengui, and Cohn, M. J. (2011). Developmental basis of sexually dimorphic digit ratios. Proceedings of the National Academy of Sciences USA. 1-6.
  • Cohn, M. J. (2011) Development of the External Genitalia: Conserved and Divergent Mechanisms of Appendage Patterning, Developmental Dynamics, 240: 1108-1115.
  • Seifert, A. W., Zheng, Z., Ormerod, B. K. and Cohn, M. J. (2010). Sonic hedgehog controls growth of external genitalia by regulating cell cycle kinetics. Nature Communications 1:23, DOI:10.1038/ncomms1020.
  • Seifert, A. W., Bouldin, C., Choi, K. S., Harfe, B. D., and Cohn, M. J. (2009). Multiphasic and tissue-specific roles of Sonic hedgehog in cloacal septation and external genitalia development. Development 136: 3949-57.
  • Seifert, A. W., Yamaguchi, T., and Cohn, M. J. (2009). Functional and phylogenetic analysis shows that Fgf8 is not required for external genital development. Development 136: 2643-51.
  • Zhang, G., Eames, F. B., and Cohn, M. J. (2009). Molecular evolution of vertebrate cartilage development. Current Topics in Developmental Biology 86:15-42.

Current Graduate Students

Name Email Research Interests
Marissa Gredler Developmental genetics and morphogenesis
Bonnie Kircher Evolutionary Developmental Biology
Francisca Leal Evolutionary developmental biology
Kelsey Lewis Evolutionary developmental biology, developmental biology
Katie O’Shaughnessy
Lily Svete
Oscar Tarazona
Emily Woodruff Evolution and development, paleontology, and phylogenetics of mammals

Current Postdocs

Name Email Research Interests
Thomas Sanger
Brooke Armfield
Christy Larkins
Rajee Rajakumar
Matt Smith