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  • Telomeres

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

  • Arabidopsis

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

  • Sensation

    The sensations of pain, itch, and touch using genetics and neurobiology.

  • 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.

  • Malaria parasites

    Malaria parasites (and their kin) can be viewed as minimal eukaryotes, harboring a nucleus (yellow), a secretory pathway the Golgi (purple) and specialized ‘rhotpry’ organelle (black), and two endosymbiotic organelles, the mitochondrion (red) and apicoplast (green).

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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The generation of neuronal diversity

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In the Drosophila optic lobes, ~200 types of neurons that are organized in 800 columns process inputs from 800 unit-eyes. Our lab asks how this variety of neurons is generated during development, how they generate…

Due the COVID-19 epidemic, the University of Pennsylvania has limited on-campus activities. As such, our team will be working remotely until further notice. If you need assistance, please send an email to biology@sas.upenn.edu, and we will happily assist you in a virtual format. For immediate service during normal working hours (M-F, 9am to 5pm) our phones are operational.

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For the most current information regarding the Spring 2021 Semester, please visit: https://coronavirus.upenn.edu/