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Thomas Hunt Morgan (1866-1945). Recipient of the 1933 Nobel Laureate in Medicine for his discoveries of the role played by the chromosome in heredity. Morgan received his Ph. D. in 1890 at Johns Hopkins University. The work which received the prize was completed over a 17-year period at Columbia University by Morgan and his students, commencing in 1910 with his discovery of the white-eyed mutation in the fruit fly, Drosophila. This led to the discovery of sex-linked inheritance, allowing chromosomes to be identified as the carriers of the hereditary material. Colorized version of 9A8125.
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