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  • Feeding worker and queen

    Social evolution: honey bee nurse workers rear larvae as either new queens or new workers

  • Larix siberica

    Siberian Larch, taken at our field site near Lake Khovsgol in north-central Mongolia.  We are analyzing tree-ring width and stable isotopes of the tree rings to reconstruct climate, and Larch responses to climate change, over the past century as the temperature in Mongolia has risen.  

  • Social evolution

    Social sharing of liquid food between ant nestmates ©Alexander Wild

  • Drosophila

    Drosophila are small flies, typically pale yellow to reddish brown to black, with red eyes. Many species, including the noted Hawaiian picture-wings, have distinct black patterns on the wings. The plumose (feathery) arista, bristling of the head and thorax, and wing venation are characters used to diagnose the family.

  • 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.

PLEASE NOTE

In line with the current policy of the University of Pennsylvania the Department of Biology has cancelled the remainder of events for the semester. Our team is now working remotely. For assistance please email biology@sas.upenn.edu and we will be able to assist you virtually.

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