We require two semesters or their equivalent in biology, general chemistry, organic chemistry and physics, as well as two semesters of writing-intensive courses. In the sciences, these will typically be comprehensive introductory courses with laboratory components. In biology, coursework will typically include molecular biology, cell biology and genetics. In some instances, actual laboratory work experience may be substituted for laboratory courses. We believe that a rigorous laboratory experience is essential to a thorough basic training in scientific concepts and methods.