But the term code-script is, of course, too narrow. The chromosome structures are at the same time instrumental in bringing about the development they foreshadow. They are law-code and executive power — or, to use another simile, they are architect's plan and builder's craft — in one.
What Is Life? Mind and Matter: The Physical Aspect of the Living Cell - Chapter II, Section 12 (p. 21), At The University Press. 1945