Two 3-hour labs each week for half a term. Prerequisites: BIOL 1301/BIOL 1101 (or BIOL 1401), BIOL 1302/BIOL 1102 (or BIOL 1402). Prerequisite or corequisite: BIOL 4310/CHEM 4310. If CHEM 4110 is counted toward a chemistry major or minor, it cannot be counted toward a biological sciences major or minor.