Science: Genes on Main Street

Like the electron, the gene has eluded the eye of Science while manifesting itself by its works. "Gene" is the name by which geneticists agreed to call the mysterious heredity-transmitting agents strung along the length of the chromosome. As minute streaks in body cells, the chromosomes were visible under the microscope; their component parts were not. Last week a long step toward visual study of genes seemed to have been taken by Dr. Calvin Blackman Bridges of the Carnegie Institution, working at the Station for Experimental Evolution in Cold Spring Harbor, N. Y....

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