JAMA. 1927;89(16):1350-1351. doi:10.1001/jama.1927.02690160058025.
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The International Congress of Hereditary Science  The International Congress of Hereditary Science, held in Berlin, September 1-7, was well attended. Professor von Wettstein of Vienna emphasized in his address that, in spite of the achievements of the devotees of hereditary science, the theory of evolution had not received the aid from that direction which it had expected. He said that the main reason for this was that the investigators of heredity occupied themselves chiefly with the laws of hereditary transmission and did not concern themselves with the laws governing the overthrow of hereditary influence. (To be sure, for the theory of evolution, hereditary transmission was necessary for the preservation of continuity, but the theory of the overthrow of hereditary influence was also needed, for otherwise there could be no progress.) Furthermore, it was because investigators of heredity had associated hereditary transmission with certain material elements called genes, or hereditary factors,


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