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The Department of Biology's graduate program launched shortly after the University of Oklahoma's establishment, with OU's inaugural Ph.D. being granted in Biology. Today, the program boasts global recognition for its expertise in ecology/systematics, animal behavior, neuroscience, physiology, and genetics/cell biology. With approximately 50 enrolled graduate students, our PhD program aims to equip students for thriving careers in academia, biomedicine, environmental sciences, or government agencies. We particularly value our exceptional graduate instruction and proven track record in cultivating accomplished researchers. Our inclusive, cooperative environment fosters innovative, cross-disciplinary investigations. Outstanding facilities support field research, molecular biology, microscopy, bioinformatics, quantitative biology, and physiology - further strengthened by collaborations with the OU Biological Station, Sam Noble Oklahoma Museum of Natural History, and Oklahoma Biological Survey.