R. Thomson

Publications29
h-index15
Citations1,114
Highly Influential Citations92
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Recent common ancestry of human Y chromosomes: evidence from DNA sequence data.
We consider a data set of DNA sequence variation at three Y chromosome genes (SMCY, DBY, and DFFRY) in a worldwide sample of human Y chromosomes. Between 53 and 70 chromosomes were fully screened for… Expand
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Sparse supermatrices for phylogenetic inference: taxonomy, alignment, rogue taxa, and the phylogeny of living turtles.
As phylogenetic data sets grow in size and number, objective methods to summarize this information are becoming increasingly important. Supermatrices can combine existing data directly and in… Expand
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Fourteen nuclear genes provide phylogenetic resolution for difficult nodes in the turtle tree of life.
Advances in molecular biology have expanded our understanding of patterns of evolution and our ability to infer phylogenetic relationships. Despite many applications of molecular methods in attempts… Expand
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Assessing what is needed to resolve a molecular phylogeny: simulations and empirical data from emydid turtles
BackgroundPhylogenies often contain both well-supported and poorly supported nodes. Determining how much additional data might be required to eventually recover most or all nodes with high support is… Expand
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Genome‐enabled development of DNA markers for ecology, evolution and conservation
Molecular markers have become a fundamental piece of modern biology’s toolkit. In the last decade, new genomic resources from model organisms and advances in DNA sequencing technology have altered… Expand
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Biomechanical trade-offs bias rates of evolution in the feeding apparatus of fishes
Morphological diversification does not proceed evenly across the organism. Some body parts tend to evolve at higher rates than others, and these rate biases are often attributed to sexual and natural… Expand
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Distribution and Abundance of Invasive Red-Eared Sliders (Trachemys scripta elegans) in California's Sacramento River Basin and Possible Impacts on Native Western Pond Turtles (Emys marmorata)
Abstract We present baseline data on the distribution and abundance of invasive red-eared slider turtles (Trachemys scripta elegans) in the Sacramento River basin of northern California and discuss… Expand
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Developing markers for multilocus phylogenetics in non-model organisms: A test case with turtles.
We present a strategy for phylogenetic marker development in non-model systems. Rather than using the traditional approach of comparing distantly related taxa to develop conserved primers for unknown… Expand
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In Search of the Tree of Life for Turtles
Department of Biology, Earlham College, Richmond, Indiana 47374 USA [johni@earlham.edu]; Natural History Museum and Biodiversity Research Center, Department of Ecology and Evolutionary Biology,… Expand
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Rapid progress on the vertebrate tree of life
BackgroundAmong the greatest challenges for biology in the 21st century is inference of the tree of life. Interest in, and progress toward, this goal has increased dramatically with the growing… Expand
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