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  • Porphyrogenes peterwegii

     Pupa of the butterfly Porphyrogenes peterwegii "peering" out of its leafy nest with false eyes, which in turn mimic the eyes of a snake, thereby protecting the pupa from small feather-brained  birds.

  • Sea Anemone

  • Escherichia coli

    Escherichia coli cells with fluorescently labeled chromosomal loci. 

  • Consequences of HD-ZIPIII dysregulation

    How do organisms create such complex and beautiful shapes? And how do they do it so reproducibly? Plants are an excellent system to study these questions. For instance, the HD-ZIPIII family of transcription factors are >700 million years old and regulate nearly all aspects of plant development. Consequences of HD-ZIPIII dysregulation on plant morphology are severe (pictured here). Understanding how HD-ZIPIII proteins work is a central theme of the lab.

  • Arabidopsis

    Wild-type and transgenic Arabidopsis plants expressing miR156, a microRNA that promotes juvenility and increases the rate of leaf initiation

Biology is fundamental to our changing world. The 21st century challenge for our students, our scholars, and the greater society is to understand our place in this changing world and to create fundamental knowledge for informed policies, economies, and social structure.

Upcoming Events



Fundamentals of the second-order flows from synaptic excitability to neuronal circuitry and connectivity

Pilhwa Lee, Morgan State University
- | DRL 4C6 and via Zoom

Abstract: This talk covers some efforts to extend the formalism of informational flow from the first order and mono-layers to the second-order and double-layers, as well as symmetry and skew-symmetry…



2025 Telfer Lecture

Dr. Itai Yanai, New York University Grossman School of Medicine
- | Leidy 109 and Zoom

Title: Cellular plasticity in cancer and bacteria
Speaker: Itai Yanai

Bluesky: @itaiyanai.bsky.social

Twitter/X: …



The evolution of immunity and pathogenesis within environmental battlegrounds

Dr. Tera Levin, University of Pittsburgh
- | Leidy 109 and Zoom

Abstract; New infectious diseases routinely emerge from natural reservoirs, with sometimes devastating consequences on human populations. How does this happen? Specifically, what events within natural…