Through observation and experiments, biologists gain an understanding of the nature and functioning of the living world, integrating this knowledge with the aid of chemistry, physics, and mathematics. Students at the University of Dallas explore biology through an active learning process that incorporates hands-on experience in the laboratory and field. The B.A. in Biology requires completion of the Biology Core, which includes General Biology in combination with selected chemistry, physics and mathematics courses that will serve as a foundation for further study in the Department. A minimum of 22 credits of course work in Biology must be completed, in addition to General Biology I and II (8 credits). A minimum of one course from each of the biological subject categories is required (see 'course distribution requirements' below). A grade of C or better in any prerequisite course is required for advanced courses in Biology.