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NOT Seeing Double: The Gecko Epiphany

About the author: Christel Whitehead wrote this post as a project for Dr. Stacy Krueger-Hadfield’s Fundamentals of Scientific Investigation course at the University of Alabama at Birmingham. Christel earned a BS in Zoology and a MS in Biology from Auburn University. She is currently pursuing a PhD in Biology Education Research in the lab of Dr. Peggy Biga […]

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What does the history of human hybridization share with some of our closest relatives?

  About the author: Marcella is an NSF postdoctoral fellow currently working in David Toews’ lab on the genetics of speciation and hybridization. Her current projects involve evolutionary genomics of adaptation, species divergence, and gut microbiome structure in wood warblers. Marcella received her PhD and MS in Ecology and Evolutionary Biology at the University of Michigan. […]

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Revealing ancient hybridization’s role in diversification

Hybridization between closely related species is a rapidly emerging field of interest for evolutionary biologists, and the more scientists look for signals of hybridization (with ever fancier tools), the more we learn that hybridization is the norm rather than the exception (Payseur & Rieseberg 2016). While young species pairs tend to hybridize more readily than […]

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Three’s not a crowd! Does genetic variation across a tri-species hybrid zone respond to environmental differences across the landscape?

Hybrid zones elucidate the barriers to interspecific reproduction, the raw material for speciation, and thus are unparalleled resources for evolutionary biologists (Harrison 1993). However, when hybrid zones appear to lack reproductive barriers to gene flow, they pose a different set of questions, for example, what are the historical and contemporary factors which facilitate gene flow […]

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