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  • ERK1/2 signaling pathway

     ERK1/2 signaling pathway regulates exocytosis and tumor invasion through phosphorylation of the exocyst complex. 

  • Telomeres

    Giant ‘polytene’ chromosomes (white) from a fruit fly with a fluorescent probe (red) that hybridizes to a telomere-restricted DNA repeat.

  • Bacterial Respiratory Complex

    Structural model of a bacterial respiratory complex III: remember that when you respire, your complex III perspires to produce your body's energy.

  • 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.

  • Field Work

    Many genes that organisms use to regulate their mutualists are also used to defend against parasites and pathogens. The shared genetic control of beneficial and harmful symbioses raises the intriguing possibility that susceptibility to infection is a pleiotropic cost of mutualism. Our goal is to understand how a genetic tradeoff between attracting mutualists and repelling parasites has shaped the genomic architecture of traits mediating species interactions, and how ongoing conflict influences adaptation. 

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.

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Upcoming Events



Evolutionary dynamics of cooperation via indirect reciprocity

Dr. Taylor Kessinger, Penn Postdoctoral Researcher
- | Leidy Room 10

Abstract: We live in a society. Societies depend on cooperation between unrelated individuals who have little prospect for repeated interactions––and thus little clear incentive to cooperate. How can we resolve this…



Seminar with Paul Atzberger

Paul Atzberger, University of California Santa Barbara
- | Online Only


Mechanisms of climate change resilience in reef-building corals

Dr. Katie Barott, University of Pennsylvania
- | Leidy Room 10

Abstract:

Environmental variability is predicted to promote stress tolerance by selecting for phenotypic plasticity. However, the influence of environmental variability (e.g. diel fluctuations in seawater…