Abstract
To devote an entire paper in this series on nucleic acids and proteins to a discussion of the role of RNA synthesis in very early development might appear disproportionate. The bias of those who study the problem is, however, that to do so is no more disproportionate than was the role given by Juvenal to the debauchee, Crispinus, in the original fish story.1 The turbot's affairs were meant to have significance for Rome beyond those of an Egyptian parvenu, and what is emerging from contemporary study of RNA metabolism in animal embryos may be expected to have important applications to . . .