  The project's specific goals at the outset were: (i) to identify all genes of the human genome (initially estimated to be 100,000); (ii) to sequence the approximately 3 billion nucleotides of the human genome; (iii) to develop databases to store this information; (iv) to develop tools for data analysis; (v) to address ethical, legal, and social issues; and (vi) to sequence a number of “model organisms,” including the bacterium Escherichia coli, the yeast Saccharomyces cerevisiae, the roundworm Caenorhabditis elegans, the fruitfly Drosophila melanogaster, and the mouse Mus musculans. The DOE established three genome centers in 1988–89 at Lawrence Berkeley, Lawrence Livermore, and Los Alamos National Laboratories; as Associate Director of the DOE Office of Health and Environmental Research (OHER), David Galas oversaw the DOE's genome project from April 1990 until he left for the private sector in 1993. The NIH instituted a university grant-based program for human genome research and placed Watson, co-discoverer of the structure of DNA and director of Cold Spring Harbor Laboratory, in charge in 1988. In October 1989, the Department of Health and Human Services established the National Center for Human Genome Research (NCHGR) at the NIH with Watson at the helm. During 1990 and 1991, Watson expanded the grants-based program to fund seven genome centers for five-year periods to work on large-scale mapping projects: Washington University, St. Louis; University of California, San Francisco; Massachusetts Institute of Technology; University of Michigan; University of Utah; Baylor College of Medicine; and Children's Hospital of Philadelphia.