The dissemination of experimental materials, instruments, and methods is central to the progress of research in genetics. In recent years, competition for research funding and intellectual property issues have increasingly presented barriers to the dissemination of this "research-related information. "Information gathered in interviews with experimental geneticists and analysis of acknowledgment patterns in published genetics research are used to construct a series of basic scenarios for the exchange of genetic materials and research methods. The discussion focuses on factors affecting individuals' behavior (...) and expectations as information requesters and information providers. (shrink)