In 1958 Francois Jacob and Jacques Monod began to study the mechanisms that were responsible for the transfer of genetic information. These two men also wanted to reveal how regulatory pathways (in bacterial cells) change the activity of macromolecules. Following this train of thought, Jacob and Monod created multiple theories, including mRNA, regulator genes, operons, and allosteric proteins as well.

Later, Jacob applied the replicon hypothesis for certain aspects of cell division in bacteria. (His speciality after all was studying bacteria.) He devoted his interests toward the genetic analysis of activities associated with cell division. Monod, a fellow frenchman, figured out that by the age of 16 he wanted to become a biologist and explain how living things work. Like Jacob, he also worked with bacteria because he could "manipulate" these little creatures. Jacob, and Monod were drawn toward a research career in genetics. Jacob approached Monod for...