(3 hours) Prerequisite: BIOL 380 and BIOL 380L and BIOL 210 and BIOL 210L or BIOL 227 and BIOL 227L or BIOL 241 and BIOL 241L (grades of “C” or better). Corequisite: BIOL 424L. A study of the factors of morphogenesis in animals. Lecture 3 hours. This course cannot be challenged.