Jacques Ninio addresses molecular biology from the evolutionist's viewpoint, reviewing major research areas such as acquisitive evolution; the comparison of protein structures in three dimensions; the stability of the genetic code; and prebiotic replication. Originally published in 1983. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.