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T. Ryan Gregory

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Dr. T. Ryan Gregory (b. May 16 1975) is a Canadian evolutionary biologist and genome biologist and an Assistant Professor in the Department of Integrative Biology and the Biodiversity Institute of Ontario at the University of Guelph in Guelph, Ontario, Canada.

Dr. Gregory completed his B.Sc. (Hons) at McMaster University in Hamilton, Ontario in 1997 and his Ph.D. in evolutionary biology and zoology at the University of Guelph in 2002. He then carried out postdoctoral work at the American Museum of Natural History in New York City (2002-2003) and the Natural History Museum in London, England (2003-2004) before returning to the University of Guelph as a faculty member ((1)). His research focuses primarily on the issue of genome size evolution (the so-called "C-value paradox" or "C-value enigma", the latter being a term he coined). He created the Animal Genome Size Database in 2001. His academic interests are self-described as "very broad" and touch on many different biological disciplines ((2), (3)). He is also active in the DNA barcoding initiative spearheaded by Prof. Paul D.N. Hebert at the University of Guelph.

In December 2004, Dr. Gregory released an edited book entitled The Evolution of the Genome (Elsevier; ISBN 0-12-301463-8) and he is currently the author of more than 30 peer-reviewed scientific journal articles. He has been the recipient of several awards including the University of Guelph Alumni Doctoral Scholarship (1998-2001), the NSERC Howard Alper Postdoctoral Prize (2003), a McMaster Alumni Association Arch Award (2005), an American Society of Naturalists Young Investigator Prize (2006), the Canadian Society of Zoologists Bob Boutillier New Investigator Award (2007), and various other scholarships and fellowships ((1)).

Selected publications

Gregory, TR (2005). Synergy between sequence and size in large-scale genomics. Nature Reviews Genetics 6, 699-708.

Gregory, TR (2005). DNA barcoding does not compete with taxonomy. Nature 434, 1067.

Gregory, TR (2005). The C-value enigma in plants and animals: a review of parallels and an appeal for partnership. Annals of Botany 95, 133-146.

Gregory, TR (2004). Macroevolution, hierarchy theory, and the C-value enigma. Paleobiology 30, 179-202.

Gregory, TR (2004). Insertion-deletion biases and the evolution of genome size. Gene 324, 15-34.

Gregory, TR (2003). Variation across amphibian species in the size of the nuclear genome supports a pluralistic, hierarchical approach to the C-value enigma. Biological Journal of the Linnean Society 79, 329-339.

Gregory, TR (2002). A bird's-eye view of the C-value enigma: genome size, cell size, and metabolic rate in the class Aves. Evolution 56, 121-130.

Gregory, TR (2002). Genome size and developmental complexity. Genetica 115, 131-146.

Hardie, DC, Gregory, TR, and Hebert, PDN (2002). From pixels to picograms: a beginners' guide to genome quantification by Feulgen image analysis densitometry. Journal of Histochemistry and Cytochemistry 50, 735-749.

Gregory, TR (2001). Coincidence, coevolution, or causation? DNA content, cell size, and the C-value enigma. Biological Reviews 76, 65-101.

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