1. From the National Eye Institute, the3National Human Genome Research Institute, and the
2. National Human Genome Research Institute, and the
3. From the National Eye Institute, the
4. National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, Maryland;
5. Howard Hughes Medical Institute, Bar Harbor, Maine;6The Jackson Laboratory, Bar Harbor, Maine; and the
6. Comparative Genetics Program, Texas A & M University, College Station, Texas.